The cost of erecting a wall all around a circ | vedclass

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(C) $1$. The circumference of the circular ground is given by: $	ext{Circumference} = \frac{	ext{Total Cost}}{	ext{Rate per meter}} = \frac{26,400}

Vedclass · Accepted Answer

$770$

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(C) $1$. The circumference of the circular ground is given by: $	ext{Circumference} = \frac{	ext{Total Cost}}{	ext{Rate per meter}} = \frac{26,400}{60} = 440 \ m$.$2$. Let the radius of the ground be $r$. The formula for circumference is $2\pi r = 440$.$3$. Using $\pi = \frac{22}{7}$, we get $2 	imes \frac{22}{7} 	imes r = 440$, which simplifies to $r = \frac{440 	imes 7}{44} = 70 \ m$.$4$. The area of the circular ground is $A = \pi r^2 = \frac{22}{7} 	imes 70 	imes 70 = 22 	imes 10 	imes 70 = 15,400 \ m^2$.$5$. The cost of levelling the ground at $₹ 50/m^2$ is $15,400 	imes 50 = ₹ 7,70,000$.

The cost of erecting a wall all around a circular ground at the rate of $₹ 60/m$ is $₹ 26,400$. Find the cost of levelling the ground at the rate of $₹ 50/m^2$. (in $₹$) (in $1,000$)

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