Question

Which is the formula to calculate area for a circle with diameter eighty-two miles?

pi times forty-one squared

pi times eighty-two squared

two pi times forty-one

two pi times eighty-two

Answer 1

the area of a circles formula is
A+pi*r^2
so if your diameter is 82, you want 1/2 of that since radius is 1/2 the diameter
so it will be 41
so plug 41 into the equation
A=pi*41^2
41 ^2 = 1681
* pi= (using 3.14 as pi, thats how ive always done it)
so its approximately 5278
so your anser is A
A is the answer, if im correct
medal please :D

Answer 2

thx again

Answer 3

*anytime