NCERT Class 7 Mathematics Solutions: Chapter 11 –Perimeter and Area Exercise 11.4 Part 1

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Understanding Area of rectangle

Understanding Area of Rectangle

Understanding Area of rectangle

1. A garden is long and broad. A path wide is to be built outside and around it. Find the area of the path. Also find the area of the garden in hectares.

Answer:

Length of rectangular garden and

Breadth of rectangular garden

Outer length of rectangular garden with path

Outer breadth of rectangular garden with path

A Rectangular Garden

A rectangular garden, length = 90 m and breadth = 75 m

Outer area of rectangular garden with path length breadth

Inner area of garden without path length breadth

Now,

Area of path Area of garden with path Area of garden without path

Since,

Hectares

So,

Hectares

2. A wide path runs outside and around a rectangular park of length and breadth . Find the area of the path.

Answer:

Length of rectangular park

Breadth of rectangular park and

Width of the path

Length of rectangular park with path

Breadth of rectangular park with path

Rectangle Park ABCD

Rectangle Park ABCD, length = 125 m, breadth = 65 m

Area of path Area of park with path Area of park without path

So, area of path around the park is .