Shape and Space 7
1 mark · EasyWrite down the formula for the surface area of a sphere of radius .
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Surface area = 4πr²
Also accept: 4πr²; A = 4πr²; A = 4\pi r^2; Surface area = 4πr²
Common mistakes: 4πr; πr²
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Marking points
B1 · 1 mark · Writes the correct formula for surface area: 4πr² (accept any clear correct format).
Worked solution
The surface area of a sphere is .