Question

A 13z-foot by 18-foot concrete wall is to be built using concrete blocks. Find the area of the wall.

a) 13z × 18 square feet
b) 31 square feet
c) 234 square feet
d) 2z × 18 square feet

Answer 1

The correct answer for the area of the 13z-foot by 18-foot concrete wall is option (a) 13z × 18 square feet.

Step-by-step explanation:

To find the area of the concrete wall, we should multiply its length by its height according to the formula for the area of a rectangle, which is area = length × height.

Here, the wall has a length of 18 feet and a height of 13z feet. Therefore, the area of the wall can be calculated as:

Area = 13z × 18

So, the correct area of the wall expressed mathematically is option (a) 13z × 18 square feet.