Page 219 - New Medley 5 Semester 1

B. Find the perimeter of the triangle whose three sides (a, b and c) are
given below.

a b c Perimeter

1. 6 cm 7 cm 9 cm

2. 20 m 20 m 15 m
3. 8 cm 15 cm 17 cm

4. 9 m 40 m 41 m

C. Complete the table with missing measures of rectangles in each case.

Length Breadth Perimeter
1. 18 m 16 m

2. 18 cm 100 cm

3. 17.5 cm 54 cm

4. 8.31 cm 4.27 m

D. Find the perimeter of squares whose sides are given below.

1. 6 cm 2. 8 m 3. 10.5 m 4. 12.3 cm

E. Solve the following word problems.

1. Mini wants to fence her garden with barbed wire twice. How many metres
of the wire should she buy, if the garden is 60 m long and 30 m wide?

2. Find the length of the wood required to make the frame of a carrom
board with each side 100 cm.

3. The perimeter of a rectangular platform is 120 m. If its length is 40
m, find its width.

4. If the perimeter of a square is 120 cm, then find its side.

5. To make a stamp, Aman cuts a square from a corner of the postcard.
Find the perimeter of the remaining portion of the postcard after finding
the length of the missing sides.
16 cm
6. Kriti walks around a square park of length 80 m
twice while Vanita walks around a rectangular ? 10 cm

park of length 60 m and width 30 m thrice. Who 2.5 cm
walks more distance? 2.5 cm
?

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