Question

Find the area of the circle, please help I don't have that much time.

d=10in
the questions.
A. 3140 in²
B. 314.00 in²
C. 78.50 in²
D.62.80 in²
E.15.70 in²

Answer 1

d = diameter = 2 times radius (2r)

so since d = 2r <=> 10 = 2r <=> r = 5inches

where the area of circle formula is : πr²

therefore : πr² = 3.14*5² = 3.14 * 25 = 78.5in²

so the answer is C.