The radius of a semicircle is 4 yards. What is the semicircle's area?

About 25.13 yards^2

Step-by-step explanation:

The area of a semicircle can be found using the following formula:

We know that the radius is 4 yards. Therefore, we can substitute 4 yards in for r.

First, evaluate the exponent.

(4 yards)^2=4 yards *4 yards= 16 yards^2

Multiply pi and 16 yards^2.

Divide 50.2654825 yards^2 by 2.

Rounded to the nearest hundredth:

The area of the semicircle is about 25.13 square yards.

the answer is c. hope this !

step-by-step explanation:

(sin 42)/31. = sinx)/37

sinx = 37 (sin42)/31

= 37× 0.66/31 = 0.787

x= 51.9

other angle opposite to y = 180-51.9-42

= 180- 93.9 =86.1

so

sin42)/31 = sin 86.1)/y

0.021 = 0.997 /y

y= 0.997/0.021 =47.47