Question

3. A wire is in the shape of a circle of radius 63 cm. It is bent to form rectangle whose length is

120 cm. Find its breadth.​

Answer 1

Answer:

6cm

Step-by-step explanation:

radius =63

diameter=63+63=126

length of rectangle= 120

Breadth=126-120=6cm

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Answer 2

Step-by-step explanation:

GIVEN :

r = 63 cm

length = 120 cm

b = ?

perimeter of circle = perimeter of rectangle

now,

perimeter of circle = 2 π r

= 2 × 22 / 7 × 63

= 2 × 22 × 9 ( 7 and 63 get cancelled)

= 396 cm

now ,

perimeter of circle = perimeter of rectangle

396 cm = 2 ( l + b )

396 cm = 2 ( 120 + b )

396 ÷2 = 120 + b

198 = 120b

120 + b = 198

b = 198 - 120

b = 78cm