nycastrid23 nycastrid23

27-06-2021
Mathematics

contestada

What is the surface area of a sphere with a radius of 21 units

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amnar14 amnar14

27-06-2021

Hope this helps

Answer: 5541.77

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AyoMiDeEsth AyoMiDeEsth

27-06-2021

formulae is 4πr²
4×22/7×21²
4×22×3×21
cause 7 divided the first 21 which gave it 3
answer=5544cm²

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