Question

If answered please explain because this is really hard

Answer 1

This is really simple, all you have to do is establish a new relation which describes this particular case;

For example if i wanted to find the area of the full circle (360°), i would use the equation which states that;

`a = \pi \: r {}^(2)`

`a = \pi \: 8 {}^(2)`

`a = 3.14 * 64`

`a = 201.06 \: inches {}^(2)`

But do i really wan the full 360 degrees?

In reality i only need a 70 degree circle (in a sense).

If 360 makes a full circle

How many circles is 70?

Use the triple rule to find that;

`x = (70)/(360) = 0.1945 \: cirles`

So that area would be;

`\alpha = 0.1945 * 201.06 = 39.0617 \:`

That is your area. a=39 inches² rounded to the nearest tenth.