Related Links


Definition Of Dimensions

Dimensions are used to describe the size and shape of an object. For example: length, width, height, etc.

More About Dimensions

Length and width are the dimensions of a two-dimensional figure.
Length, width, and height are the dimensions of a three-dimensional figure.

Example of Dimensions

The dimensions of a rectangle are 4m x 2m` implies that the `length of the rectangle is 4m and its width is 2m

Video Examples: SPM - Maths Form 4 - Line and Plane in 3 Dimension (Fully Cover)

Solved Example on Dimensions

Ques: Laura drew a trapezoid with dimensions as shown in the figure. Find the perimeter of the trapezoid.

 example of  Dimensions


A. 23 cm
B. 21 cm
C. 24 cm
D. 22 cm
Correct Answer: A


Step 1: The perimeter of a figure is the sum of all its side-lengths.
Step 2: The side-lengths of the trapezoid are 3 cm, 3 cm, 6 cm and 11 cm.
Step 3: The perimeter of the trapezoid = 3 + 3 + 6 + 11 = 23 [Add.]
Step 4: The perimeter of the trapezoid that Laura drew is 23 cm.