Step-by-step explanation:
Area of figure = area of rectangle + area of semicircle
C. I believe there is only 1 times itself to equal 157.
Percent means per one hundred so we can say:
n(20/100)=100
n(1/5)=100
n=500
So 20% of 500 is 100.
check...
500(20/100)
500(1/5)
500/5
100