Question

if the radius of hemisphere is halved then its total surface area becomes​

Answer 1

Answer:

total will get reduced by 4 times

Step-by-step explanation:

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Answer 2

Solution:

Let radius of sphere be 'r' then

SA=$4\pi r^{2}$

If radius is halved, then

SA=$4\pi r(\frac{r}{2})^{2}$

=$\frac{1}{4}$×4$\pi r^{2}$

=$\frac{1}{4}$× old surface area

∴ $\frac{1}{4}th$ change is surface area

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Step-by-step explanation: