choccocake2500 choccocake2500

14-11-2019
Mathematics

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EASY QUESTION
Find area and please show working out

EASY QUESTION Find area and please show working out class=

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alinateow alinateow

14-11-2019

area of a semi-circle = 1/2 x x r square.

area of larger semi circle
= 1/2 x x 10 square
= 50

area of smaller semi circle
= 1/2 x x 5 square
= 12.5

Total area = 50 + 12.5 = 196 cm square ( to 3 sf ) or 62.5

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