Question

Can someone please help me answer this math problem?

Answer 1

`r=43.3\ cm`

Explanation:

we know that

Applying the Pythagorean Theorem in the right triangle drawn with dashed lines

`c^2=r^2+h^2`

where

c is the hypotenuse (the greater side) r and h are the legs (perpendicular sides)

we have

`c=3(15)=45\ cm\\h=12.2\ cm`

substitute

`45^2=r^2+12.2^2`

`r^2=45^2-12.2^2`

`r^2=1,876.16\\r=43.3\ cm`