Question

01. А metal of length 2cm and breadth 44m in rolled from a hollow pipe of length 2cm then the radius of the pipe is.
a.44cm. b.22cm. c.11cm. d. 7cm.
Step by step explanation needed if anyone answers this question in a perfect way then I'll mark them as the brainliest
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Answer 1

Answer:

d. 7 cm

Step-by-step explanation:

l×b = 2πrh

2×44 = 2×22/7×2×r

r= 7