Question

ASAP please help me i dont understand

Answer 1

Answer:

$12.5\pi \: units^{2}$

Step-by-step explanation:

Area of semicircle= 1/2 area of circle

$area \: of \: circle = \pi {r}^{2}$

Thus,

$area \: of \: semicircle = \frac{1}{2} \pi {r}^{2}$

Given that the diameter is 10 units,

radius= 10÷2

radius= 5 units

subst. r=5 into the formula:

Area of semicircle

$= \frac{1}{2} (\pi)( {5}^{2} ) \\ = \frac{25}{2} \pi \\ = 12.5\pi \: units^{2}$

Answer 2

The answer is 39.25 units^2

look at the attached picture

Hope it helps

Good luck on your assignment