# NCERT Class 7 Mathematics Solutions: Chapter 11 – Perimeter and Area Exercise 11.1 Part 1

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1. The length and breadth of a rectangular piece of land are and respectively. Find:

(i) Its area.

(ii) The cost of the land, if of the land costs.

Answer:

Given:

Length of a rectangular piece of land and

Breadth of a rectangular piece of land

(i) Area

(ii) Cost of land

Cost of

2. Find the area of a square park whose perimeter is .

Answer:

Given,

Perimeter

Length of the side of park

Length of the side of park

Area

3. Find the breadth of a rectangular plot of land, if its area is and the length is . Also find its perimeter.

Answer:

Given:

Area is

Length is

Area Length Breadth

Breadth

Breadth

Perimeter (Length + Breadth)