Answer:

Step-by-step explanation:

The perimeter = 4 * length of a semicircle of radius 5 == 4* pi * 5 = 20 pi cm
The area of one of the clear parts = 1/2 area of square - area semicircle
= 1/2 * 10^2 - 1/2 pi *5^2 = 50 - 12.5pi
So area of shaded parts = area of square - 4 (50 - 12.5pi)
= 100 - 200 + 100pi = (100pi - 100) cm^2
Answer:
0.53
Step-by-step explanation:
Answer:
35
Step-by-step explanation:
55-[(5x2x3)-5x2]
55-[30-5x2]
55-20
35