# Math

posted by
**Jerald**
.

The triangle below has a height of 12 feet and a base of 9 feet. What is the area of the triangle?

A.108

B.54

C.21

D.30

B?

If the area of a square is 81 square meters which formula would you use to calculate the perimeter of the square?

A.p=lxw

B.p=s+s

C.p=4(s)

D.Not here

C?

The circumference of this circle is approximately 66 inches. What is the radius?

A.33

B.22

C.11

D.Not here

D?