How do you work out the area and circumference of a semi circle?
Hi!! I always just worked out the area or circumference of a circle and divided it by two but this is giving me the wrong answers. How are you meant to work it out?
Thanks!
Ps. Anyone else sitting the long unit 3 maths exam in june?
The area is half that of the full circle. The perimeter (not strictly the circumference) is half the circumference plus the diameter. – draw out a semi-circle and you’ll see it’s bound by a curve and a straight line.
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