Question

11. A piece of wire is in the form of a rectangle whose length and breadth are 52 cm
and 14 em respectively. It is rebent in the form of a circle. Find the diameter of the
circle.​

Answer 1

Answer:

length of the wire= perimeter of the rectangle

perimeter of the rectangle=2(52+14) cm

=2×66 cm

=132 cm

so, circumference of the circle=132 cm

so, diameter of the circle=132/π cm

=132×7/22 cm

=6×7 cm

=42 cm

Answer 2

Answer:

l=52cm

b=14cm

the perimeter of the rectangle = circumference of the circle (as the question says it is rebent)

Step-by-step explanation:

So,

2(L+B) = 2×pi×r

2(52+14) = 2×pi×r

52+14 = pi×r

66 = (22/7)×r

21 = r

so the diameter of the circle is 2r i.e 42 cm