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andriy [413]
3 years ago
14

How to solve the question

Mathematics
2 answers:
Pani-rosa [81]3 years ago
4 0
It should be 90cm
So it says 20cm multiply that by2 which is 40
Then add all the 10.
That is it!
Norma-Jean [14]3 years ago
4 0
Find area of quadrant with radius 10 cm and subtract the triangle. Multiply that by 2 for area at right corner. Let’s call this K
Find area of quadrant with radius 20 cm and subtract a semicircle and square with area of 100 cm^2. Add K to get answer.
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