Question

A circle of radius 32cm is cut into 8 equal parts calculate the perimeter of each part giving your answer correct to the nearest millimeter

Answer 1

Hey! answer is 40212mm

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10mm in a cm, so radius is 320mm

area of a circle is pi multiplied by (radius squared)

so it’s pi multiplied by (320 squared) = 102400 pi

(put it in a calculator)

then the circle is in eight equal sections and you want each part, so divide the number from before by 8. this gives you 12800 pi.

press the s<->d button on the calculator to get the decimal version: 40212.38597

this is already in mm, so round it to get 40212mm

Answer 2

I think it’s 16

Radius of circle = 32
Diagonal of circle = 64 cm
So 64 divided by 8 = 16
Mark me as brainliest