If a wire is bent into the shape of a square then area of square is 81 square cm .when the wire is bent into a semi circular shape the area of semi circle will be
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Area of square is 81 cm²
side = 9 cm
perimeter=9 × 4 = 32 cm
perimeter of semi circle = 32 (wire is same)
πr+2r=32
r=32/(π+2)
r=32/5.14
r=6.22
area = πr²/2
side = 9 cm
perimeter=9 × 4 = 32 cm
perimeter of semi circle = 32 (wire is same)
πr+2r=32
r=32/(π+2)
r=32/5.14
r=6.22
area = πr²/2
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Answer:
IDK
Step-by-step explanation:
Area of square is 81 cm²
side = 9 cm
perimeter=9 × 4 = 32 cm
perimeter of semi circle = 32 (wire is same)
πr+2r=32
r=32/(π+2)
r=32/5.14
r=6.22
area = πr²/2
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