Question

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A 45° sector in a circle has an area of 43.2 cm².

What is the area of the circle?

Answer 1

so remember that a circle has 360 degreesef
45 out of 360 is th fraction that 43.2 is out of the whole circle
45/360=43.2/whole
0.125=43.2/whole
multiply both sides by whole
0.125 times whole=43.2
divide both sides by 0.125
whole=345.6
answer is 345.6 cm^2