A well, $14 m$ deep is $2 m$ is radius. Find the cost of cementing the inner curved surface at the rate of $R s 2$ per square metre

R s 242

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R s 352

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R s 464

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R s 294

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Solution

The correct option is D $R s 352$
Inner CSA of well $=$ $2 π r h = 2 \times \frac{22}{7} \times 2 \times 14 = 176 m^{2}$
Cost of cementing $= R s (176$ $\times$ $2) = R s .352$

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A well, 14m deep is 2m is radius. Find the cost of cementing the inner curved surface at the rate of Rs2 per square metre

The correct option is D Rs352Inner CSA of well = 2πrh=2×227×2×14=176m2Cost of cementing =Rs(176×2)=Rs.352

A well, $14 m$ deep is $2 m$ is radius. Find the cost of cementing the inner curved surface at the rate of $R s 2$ per square metre

The correct option is D $R s 352$
Inner CSA of well $=$ $2 π r h = 2 \times \frac{22}{7} \times 2 \times 14 = 176 m^{2}$
Cost of cementing $= R s (176$ $\times$ $2) = R s .352$