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# Use the Fig. 9.57 showing the layout of a farm house:

A fence is to be enclosed around the house. The dimensions of the house are 18.7 m × 12.6 m. At least how many metres of fencing are needed?

**Solution:**

It is given that,

Dimension of the house = 18.7 m x 12.6 m

We know that,

__Perimeter__ of the house = 2 (l + b)

By substituting the values,

= 2 (18.7 + 12.6)

So we get,

= 2 (31.3)

= 62.6 m

Therefore, 62.6 m of fencing is needed.

**✦ Try This: **How much distance, in metres, a wheel of 35 cm radius will cover if it rotates 450 times?

**☛ Also Check: **NCERT Solutions for Class 7 Maths Chapter 11

**NCERT Exemplar Class 7 Maths Chapter 9 Problem 112(c)**

## Use the Fig. 9.57 showing the layout of a farm house: A fence is to be enclosed around the house. The dimensions of the house are 18.7 m × 12.6 m. At least how many metres of fencing are needed?

**Summary:**

Using the Fig. 9.57 showing the layout of a farm house, a fence is to be enclosed around the house. The dimensions of the house are 18.7 m ×12.6 m. 62.6 m of fencing is needed.

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