Question

ASAP please help me i dont understand

Answer 1

The answer is 39.25 units^2

look at the attached picture

Hope it helps

Good luck on your assignment

Answer 2

`12.5\pi \: units^(2)`

Explanation:

Area of semicircle= 1/2 area of circle

`area \: of \: circle = \pi {r}^(2)`

Thus,

`area \: of \: semicircle = (1)/(2) \pi {r}^(2)`

Given that the diameter is 10 units,

radius= 10÷2

radius= 5 units

subst. r=5 into the formula:

Area of semicircle

`= (1)/(2) (\pi)( {5}^(2) ) \\ = (25)/(2) \pi \\ = 12.5\pi \: units^(2)`