Page 158 - Maths Class 05

If AB = 6 cm,
A
Perimeter = Sum of BC = 5 cm,

a b all its sides AC = 7 cm, then
or perimeter of ABC
a + b + c
B c C = (6 + 5+ 7) cm
= 18 cm

Practice - 10.1
Practice - 10.1
Practice - 10.1
Practice - 10.1
1. The length and breadth of rectangles are given. Find their perimeter using the formula.
a. l = 36 cm, b = 29 cm b. l = 5.8 m, b = 3 m
c. l = 2 m, b = 1 m d. l = 16 m, b = 12 m

2. The sides of some squares are given below. Find their perimeter using the formula.

a. Side = 220 m b. Side = 3 cm
c. Side = 9.21 cm d. Side = 11 cm

e. Side = 20 cm f. Side = 3.2 m

g. Side = 41 m h. Side = 5.6 cm
i. Side = 18 cm j. Side = 6.2 m

3. Complete the table given below.

S. No. Length Breadth Perimeter

a. 20 cm 100 cm

b. 3 cm 46 cm

c. 40 ft 12 ft

d. 30 m 90 m

e. 6 cm 4 cm

4. Answer the following questions.

a. The perimeter of a rectangular plot is 270 m. Its breadth is 60 m. What is its length ?
b. If I took 3 rounds of a square garden of 40 dimension, what distance I have covered ?

c. The length and perimeter of a field is 40 cm and 230 cm resp. What will be its
breadth ?

d. The length and the breadth of a rectangle is 110 cm and 35 cm resp. What will be the
perimeter of the rectangle.

e. The perimeter of the square is 80 cm, what will be its side ?

Mathematics-5 158