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Surface Area and Volume — Maths STD 9 — Question

Maharashtra BoardEnglish MediumSTD 9MathsSurface Area and Volume1 Mark
Question
Find the surface area of a sphere having radius $7 \mathrm{~cm} .\left(\pi=\frac{22}{7}\right)$
✓

Answer

Surface Area of sphere $=4 \pi r^2$
$=4 \times \frac{22}{7} \times(7)^2$
$=4 \times \frac{22}{7} \times 7 \times 7$
$=88 \times 7$
$=616$
Surface Area of sphere $=616$ sq.cm.

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