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ff A ball is dropped from a height of 144 feet from a building. The distance covered by the ball to reach the ground is expressed by the equation, s = 16t^{2}, where s is in feet and t is in seconds. Find the time taken by the ball to reach the ground. ff

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ff The area of a circular garden is given by the equation, A = 3.14r^{2}, where A is the area of the garden in square ft and r is the radius of the garden in ft. What is the radius of the garden, if its area is 7850 square ft? ff

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ff Solve 15z^{2} + 12 = 942 and round the result to its nearest tenth. ff

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ff What integral values of x satisfy the equation x^{2} = 81? ff

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ff Solve the equation p^{2} = 7 and express the solutions as radical expressions. ff

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ff Express the solutions of the equation m^{2}  18 = 31, as integers. ff

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ff Express the solutions of the equation 2n^{2}  8 = 4, in the form of radical expressions. ff

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ff Find the side of a square floor, if its area is 361 square meters. ff

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ff What is the value of x, if 5x^{2}  120 = 125? ff

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ff Which of the following statements is correct for the equation  8d ^{2} + 25 =  5d ^{2}  122? ff

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ff Frank, who weighs 39 kgs, is running in a football field. If he has acquired 78 joules of kinetic energy, then what is the velocity with which he is running? Kinetic energy is modeled by the equation E = 12 × m × v^{2}, where E is the kinetic energy, m is the mass in kilograms and v is the velocity in m/s. ff

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ff The potential energy of a spring is modeled by the equation E = 8d^{2}, where d is the distance from the equilibrium position. If the potential energy is 72 joules, then what is the equilibrium distance of the spring? ff

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ff The area of a circular cardboard is 206 square feet. What is the radius r of the cardboard (in ft), if the area of the cardboard A is modeled by the equation A = 3.14r^{2}? ff

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ff At a school, the students participating in the ROTC drill formed a circle of area 153.86 square feet. What is the radius of the circle, if the area is modeled by the equation, A = 3.14r^{2}, where A is the area in square feet and r is the radius in feet? ff

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ff At a dolphin show in Singapore City, a dolphin jumps to a height of 4 feet into the air and dives back into the water. Calculate the time, t taken by the dolphin to reach the water level, if the height it jumps to, s is given by s = (12)at^{2}, where a = 2. ff

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ff The largest pizza ever made in a foodcourt had an area of 314 square inches. What was the radius of the pizza, if its area is given by the equation A = 3.14r^{2}, where A is its area in square inches and r is its radius in inches? ff

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ff A cow is tied with a rope in a meadow so that it can graze a maximum area of 78.50 ft^{2}. What is the length of the rope? ff

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ff The area of a square field is 576 ft^{2}. Find the cost of fencing the field at $5 per ft. ff

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ff A cow is tied with a rope in a meadow so that it can graze a maximum area of 50.24 ft^{2}. What is the length of the rope? ff

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ff The area of a square field is 1936 ft^{2}. Find the cost of fencing the field at $3 per ft. ff

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ff The area of a circular garden is given by the equation, A = 3.14r^{2}, where A is the area of the garden in square ft and r is the radius of the garden in ft. What is the radius of the garden, if its area is 1256 square ft? ff

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ff Solve 15z^{2} + 37 = 382 and round the result to its nearest tenth. ff

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ff What integral values of x satisfy the equation x^{2} = 36? ff

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ff Solve the equation p^{2} = 5 and express the solutions as radical expressions. ff

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ff Express the solutions of the equation m^{2}  15 = 21, as integers. ff

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ff Express the solutions of the equation 3n^{2}  15 = 21, in the form of radical expressions. ff

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ff Which of the following statements is correct for the equation  6d ^{2} + 9 =  3d ^{2}  66? ff

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ff Chris, who weighs 39 kgs, is running in a football field. If he has acquired 78 joules of kinetic energy, then what is the velocity with which he is running? Kinetic energy is modeled by the equation E = 12 × m × v^{2}, where E is the kinetic energy, m is the mass in kilograms and v is the velocity in m/s. ff

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ff The potential energy of a spring is modeled by the equation E = 8d^{2}, where d is the distance from the equilibrium position. If the potential energy is 128 joules, then what is the equilibrium distance of the spring? ff

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ff The area of a circular cardboard is 220 square feet. What is the radius r of the cardboard (in ft), if the area of the cardboard A is modeled by the equation A = 3.14r^{2}? ff

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ff At a school, the students participating in the ROTC drill formed a circle of area 113.04 square feet. What is the radius of the circle, if the area is modeled by the equation, A = 3.14r^{2}, where A is the area in square feet and r is the radius in feet? ff

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ff At a dolphin show in Singapore City, a dolphin jumps to a height of 9 feet into the air and dives back into the water. Calculate the time, t taken by the dolphin to reach the water level, if the height it jumps to, s is given by s = (14)at^{2}, where a = 4. ff

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ff Find the side of a square floor, if its area is 625 square meters. ff

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ff The largest pizza ever made in a foodcourt had an area of 452.16 square inches. What was the radius of the pizza, if its area is given by the equation A = 3.14r^{2}, where A is its area in square inches and r is its radius in inches? ff

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