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Diameter = 7 m so, radius = 3.5 mH = 20 mVolume of the earth dug out = π r² h= 22/7 × 3.5 × 3.5 × 20= 770 m³Area of the platform = Length × breadth⇒ 22 × 14 = 308 m²Height of the platform = Volume of the earth dug out/area of the platform⇒ 770/308Height of the platform = 2.5 m Answermark it as the brainliest
Anonymous:
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sorry i think my answer is wrong
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