Question

27) What is the formula of area of a circle?

Answer 1

A=πr2

Explanation:

i believe this is the formula

Answer 2

πr^2

Explanation:

My 11th grade teacher taught me this song to remember the formula for area and circumference of a circle (to the tune of "Twinkle Twinkle Little Star"):

"Twinkle twinkle little star circumference equals 2πr. Area if you ever cared always equals πr^2."