Homework

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>>188978
I gotta ask. What grade is this for? Just curious ...

U.K. Year 10

>>188983
Year 10

>>188978
Imagine every square is the length "1" (unit length).

The amount of area in the big white circle is then

= (3 * 3 * pi)/2 - the three small half circles
= (9*pi)/2 - 1.5 * (1/4 * pi)

All of the three black circles together are

= 3 * (1/4*pi)

Now divide one by the other to get the ratio.

>>188986
Why do you do this: "-1.5*(1/4*pi)"

Not saying your answer is wrong but I don't get specifically that part of the equation.

>>188987
Because the black portion you need to subtract from the big white circle is

= "one and a half black circles"
= 1.5 * (1/2 * 1/2 * pi)
= 1.5 * (1/4 * pi)

>>188990
Ok, I get it. Thanks a lot man