find the perimeter?
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0
Answer:42
Step-by-step explanation:21 multiply 2 =42
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Answer:
75 cm
Step by step explanation:
radius = 21 cm
length of arc = 90/360 * 2πr
= 1/4 * 22/7 * 2 * 21
= 33 cm
perimeter = r + r + length of arc
= 21 + 21 + 33
= 75 cm
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