Pragya wrapped a cord around a circular pipe of radius 4 cm (adjoining figure) and cut off the length required - Maths - Perimeter and Area

Question

Pragya wrapped a cord around a circular pipe of radius 4 cm
(adjoining figure) and cut off the length required of the cord Then
she wrapped it around a square box of side 4 cm (also shown) Did
she have any cord left? (π= 3 14)

Gopal Mohanty · Accepted Answer

Perimeter of the square = 4 × Side of the square = 4
× 4 = 16 cm
Perimeter of circular pipe = 2πr = 2 × 3 14
× 4 = 25 12 cm
Length of chord left with Pragya = 25 12 − 16 = 9 12
cm

Pragya wrapped a cord around a circular pipe of radius 4 cm (adjoining figure) and cut off the length required of the cord. Then she wrapped it around a square box of side 4 cm (also shown). Did she have any cord left? (π= 3.14).