105k views
5 votes
HELP PLSSSS MATH IS NOT MY THING :(

Picture included:)

HELP PLSSSS MATH IS NOT MY THING :( Picture included:)-example-1

1 Answer

6 votes

Answer:


26.85

inches.

Explanation:

First, let us split this figure into two parts, a parallelogram and a semi-circle. The perimeter of the parallelogram will be


5 + 7 + 7 = 19

inches. We do not add the additional 5 inches due to it being stuck to the semi-circle, and hence that additional 5 inches is not part of the perimeter.

To find the curved perimeter of the semi-circle, we use the formula


\pi d

and then divide it by two as the above formula is used for a whole circle. The diameter is 5 inches and thus the curved perimeter is


(1)/(2) \pi(5) = 2.5\pi

The total perimeter is then


19 + 2.5\pi

Using a calculator, we get


26.85398...

and the answer is


26.85

inches when corrected to the nearest hundredth.

User Maxim Mazurok
by
5.2k points