Given side lengths are 9 and 17.

Tiling the cardboard with given lengths as shown below.

Number of square meters = 9 × 17 = 153 square meters.

Therefore, the cardboard is of 153 square meters.

Given side lengths are 9 and 18.

From this we know number of rows = 9

and number of columns = 18 as shown in below figure.

Therefore area = number of rows × number of columns

9 × 18

= 162 square meters

Therefore area of the rectangular park = 162 square meters.

Given side lengths are 17 and 5

rows = 5 and columns = 17, tiling the rectangle cornfield as below.

Its area, that is number of square yards = rows × columns

= 5 × 17

= 85 square yards

Therefore, the cornfield is 85 square yards.

George's bathroom floor is in the shape of a rectangle.

Given side lengths are 11 ft and 8 ft

Tiling it as shown below.

He will need 8 × 11 = 88 square foot tiles.

Metal sheet is in the shape of a rectangle.

Multiply = 5 x 22 = 110 square inches.

Area of the metal sheet is 110 square inches.

Given side lengths are 8 and 7

rows = 7 and columns = 8, tiling the rectangle cornfield as below.

Its area, that is number of square yards = rows × columns

= 7 × 8

= 56 square yards

Therefore, the cornfield is 56 square yards.

Window is 11 meters tall and 6 meters wide.

Multiply = 11 × 6 = 66 square meters.

Window is 66 square meters.

Therefore Cindy needs 66 square meters curtain to cover the window.

Tiling the upper surface of the table as shown below.

Multiply = 7 × 15 = 105 square cm

So Natalia will need 105 square cm cloth to cover the upper surface of the table.

Tim's bathroom floor is in the shape of a rectangle.

Given side lengths are 14 ft and 9 ft

Tiling it as shown below.

He will need 14 × 9 = 126 square foot tiles.

The side lengths of the study room are 10 and 9.Tiling the room as shown below.

Number of square meters of carpet needed = 10 × 9 = 90 square meters

Therefore Audrey needs 90 square meters of carpet.