If the curved surface area of a cylindrical pipe is 44,000 cm
If the curved surface area of a cylindrical pipe is 44,000 cm\(^2\) and its diameter is 5 cm, find its length.(take\(\pi = \frac{22}{7}\))
यदि एक बेलनाकार पाइप का एक वक्र पृष्ठीय क्षेत्रफल 44,000 cm\(^2\) है और इसका व्यास 5 cm है, तो इसकी लंबाई ज्ञात कीजिए। (\(\pi = \frac{22}{7}\)) लीजिए।
Detailed Solution & Logic
Correct Answer:
28 m
r = 2.5 cm, CSA = 44000 cm$ ^2 $
$ 2\pi r h = 44000 $
$ 2 \times \frac{22}{7} \times 2.5 \times h = 44000 $
$ \frac{110}{7} h = 44000 $
$ h = \frac{44000 \times 7}{110} = 2800\ \text{cm} = 28\ \text{m} $
Answer = 28 m
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