Question

A large soda bottle cap has a radius of 1+2√2 centimeters. What is the area of the bottle cap? (Recall that the area of a circle is πr^2 where r is the radius).

Answer 1

@johnweeden

Answer 2

they give you a formula, and even tell you the value of r ....

Answer 3

what part is giving you trouble?

Answer 4

cenimeters

Answer 5

centimeters is just the unit measure of length, and gets attached to the r.

cm*cm = cm^2

Answer 6

(9+8√2)π square cenimeters

Answer 7

(1+2sqrt(2))^2 pi squre centimeters

1 + 8 + 4sqrt2 if im seeing the squaring correctly

Answer 8

yeah 4sqrt2, not 8sqrt2

Answer 9

its (9+4√2)π square cenimeters thnk

Answer 10

yeah, that should be it :)

Answer 11

6\[6\sqrt{2}-15\sqrt{12}\] is what i got