Question

The diameter of a semicircular grass plot is 70m. Find the cost of fencing the plot at Rs 12 per metre

Answer 1

The cost of fencing the plot at Rs 12 per meter is Rs.2160.

Step-by-step explanation:

Given : The diameter of a semicircular grass plot is 70 m.

To Find : The cost of fencing the plot at Rs 12 per meter?

Solution :

The diameter of a semicircular grass plot is 70 m.

The perimeter of the semicircular grass plot is

$P=\frac{1}{2}\pi d+d$

Substitute the value,

$P=\frac{1}{2}\frac{22}{7}\times 70+70$

$P=110+70$

$P=180\ m$

The cost of fencing the plot at Rs 12 per meter.

$Cost = 12\times 180$

$Cost = Rs.2160$

Therefore, The cost of fencing the plot at Rs 12 per meter is Rs.2160.

#Learn more

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