Question

Prague wrapped a cord around a circular pipe of radius 4cm and cut off the length required of cord then she wrapped it around a square box of side 4cm did she have any cord left

Answer 1

Answer:

Step-by-step explanation:

radius=4cm

circumference of the circular pipe=2πr

=2×3.14×4

=25.12cm

side=4cm

perimeter of the square box=4×side

=4×4

=16cm

yes, Pragya have cord left of=25.12-16

=9.12cm

hence, final answer is yes, she have 9.12cm of cord left.

hope this helps....

Answer 2

Given :

• Pragya wrapped a cord around a circular pipe of radius 4 cm and cut off the length required of cord then she wrapped it around a square box of side 4 cm.

　

To find :

• Did she have any cord left.

　

Calculations :

★ Circumference = 2πr.

　

→ 2 × 3.14 × 4

→ 25.12

　

→ 4 (4)

→ 16

　

→ 25.12 - 16

→ 9.12 cm

　

Therefore, 9.12 cm is the required answer.