Question

In the figure above, a square is circumscribed around a circle with a diameter of 20 cm. Points Q, R, S, and T are the midpoints of the square’s sides. What is the total area, in cm², of the shaded regions?

Answer 1

@phi

Answer 2

Do you know the formula for the area of a circle?

Answer 3

no

Answer 4

That's the first thing you need. The formula is \[A=(\pi)r ^{2}\]

The diameter is 20cm, so what's the length of the radius?

Answer 5

i don't know

Answer 6

Do you know what a radius is?

Answer 7

the radius of a circle or sphere is the length of a line segment from its center to its perimeter

Answer 8

Did you just copy/paste that? or do you really know it?

If the diameter is 20cm, then the radius is...?

Answer 9

copy and paste

Answer 10

Well, until you know the basics of geometry, you'll never be able to work a problem like this one. Maybe someone will jump on here and give you the answer, since I suspect that's all you really want.