Surface Area of a Sphere

For this activity we cut up an orange to make two hemispheres and took all of the orange out from the centre and traced the circumference of the orange on to a piece of paper as many times as you can. After we ripped apart the peel of the orange. we filled the circles that we have drawn with the ripped pieces of orange to make 4 full circles of peel. I learnt that the formula of a sphere is 4 x pi x r^2

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