Question

Find the surface area of a sphere of radius :(1)10.5cm(2)5.6cm (3)14cm
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Answer 1

area of sphere=4pie r^2

i)area=4×22/7×10.5×10.5=1386cm^2

ii)area=4×22/7×5.6×5.6=394.24cm^2

iii)area=4×22/7×14×14=2464cm^2