Question

A circular picture is 8 inches in diameter.
What is the area of the picture in square inches?

A. 4π square inches
B. 8π square inches
C. 16π square inches
D. 32π square inches

Answer 1

first find the radius

radius = (1/2)*diameter = ?

Answer 2

4?

Answer 3

yup, now we use the equation

area = pi*(radius^2) = ?

Answer 4

Pi x 4?

Answer 5

not quite, remember the exponent

radius^2 = ?

Answer 6

^2 means squared

Answer 7

oh ok i didnt know it was an exponent

Answer 8

so, radius^2 = ?

Answer 9

wait what does pi mean

Answer 10

pi = π

Answer 11

um what does that mean?