A3 1/2 foot by 30-foot concrete wall is to built using concrete blocks. find the area of the wall

105 sq ft.

Multiply the width by the length to get the area. This is assuming the wall is a rectangle, and is two-dimensional. But based off the context of the question, the answer is 105

A = 0.785m²

B = 31400cm²

C = 7850cm²

D = 785,000mm²

Use the fomula to find the area.

If you are having trouble finding the radius divide the diamater by two.

For refrence use 3.14 as pi when multiplying:)