Question

5.
Find the perimeter of a rectangle whose length = 22.5 m and breadth = 16 dm.
Find the perimeter of a rectangle with length = 24 cm and diagonal = 25 cm
6.
7.
8.
total cost of fencing it at the rate of 2 48 per metre is 19,200, find its length an
breadth.
A wire is in the shape of a square of side 20 cm. If the wire is bent into a rectangle
of length 24 cm, find its breadth
9. If P = perimeter of a rectangle, I = its length and b = its breadth; find :
(1) P, if I = 38 cm and b = 27 cm
(li) b, if P = 88 cm and I = 24 cm
(i) I, if P = 96 m and b = 28 m
10. The cost of fencing a square field at the rate of 75 per meter is 67,500. Find the
perimeter and the side of the square field.
11. The length and the breadth of a rectangle are 36 cm and 28 cm. If its perimeter is
equal to the perimeter of a square, find the side of the square.
12. The radius of a circle is 21 cm. Find its circumference (Take =
The length and breadth of a rectangular piece of land are in the ratio of 5 : 3. It the​

Answer 1

Answer:

10 .Perimeter- 67500/75

=900m

perimeter=4s

900=4s

900/4=s

225=s

Answer 2

8. Perimeter of square = 4×s

= 4×20

=80 cm

Perimeter of rectangle is also same

perimeter of rectangle :

= 2( l+b)

80 =2(24+b)

80÷2 = 24+b

40 = 24 + b

b = 40-24

=16 cm