Ineed to know how to solve this my test is coming up

Step-by-step explanation:

Problem Green

Look at the white area. Where it meets the green border is the region of a quarter circle. So the quarter circle has a circumference of 1/4 * (2pi) r

r we are to take it, is 10/2 = 5 cm. It is 1/2 the side of the square..

So the perimeter of 1/4 green circle is (2/4) pi * 5 = 1/2 pi * 5 = 2.5*pi

There are 4 such areas.

So we have to multiply by 4

4 * 2.5 = 10 pi

The answer is 10*pi.

An alternate answer is 31.4 cm

Problem Two

Large Circle

Perimeter of the large circle = 2pi*r

r = 14 cm

Perimeter of the large circle= 2* pi * 14 = 28*pi

Small Circle

r = 14/2 = 7 cm

Perimeter = 2*pi*r

Perimeter = 2 * pi * 7

Perimeter = 14 pi

Answer

Total Perimeter = Small Circle + Big Circle

Total Perimeter = 14*pi + 28*pi = 42*pi

Your answer could be 42*3.14 = 131.88

If none of these are right, list your choices.