Question

What is the area of a circle with a diameter of 8?

A. 4π
B. 8π
c. 16π
d. 64π

Answer 1

Do you know the formula for the area of a circle?

Answer 2

The formula for Area of a Circle is :
A = (pi) * r(squared)

Answer 3

r = radius, which is half of the diameter (which you already know)

Answer 4

\(\large A_{circle} = \pi r^2\)

where r = radius
You were given the diameter.
The radius is half of the diameter.
Find the radius first, then use the formula.

Answer 5

A.

Answer 6

@IrisCavadraVenda
Direct answers aren't allowed, and A is incorrect.

Answer 7

Sorry! I didnt know I havent been on open study in a long time I will remember that

Answer 8

@floatingsugar
Any ideas?

Answer 9

my answeer is c

Answer 10

@srebollozo
Direct answers aren't allowed.

Answer 11

So it would be C? That is what i got when I did 3.14*4 squared. It took me to 16, correct?

Answer 12

yes

Answer 13

Thank you!

Answer 14

so would be c? i got divide that 25.12 by 8 gonna be 16