Q1.The circumference of the base of a cylinder is 15m and its height is 84m .find the volume of the cylinder?
Q2.A rectangular sheet of paper 42cm*16cm is rolled along its length and a cylinder is formed .find the volume of the cylinder?
Q3.A hollow cylindrical pipe is made of copper. The volume of the metal used in the pipe is 2640 cubic cm.its external radius is 7cm and length 21cm.find the thickness of the pipe?
chinni112:
Answer it fast
At least any two of them
Try to answer 3 of them then I will mark you as brainliest
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1. 2pie r= 15
2 *22/7 * r =15
r=105/44
H=84m
Volume =pir*r2*h
=22/7 *105/44*705/44*84
=33075/22 cm2
2 *22/7 * r =15
r=105/44
H=84m
Volume =pir*r2*h
=22/7 *105/44*705/44*84
=33075/22 cm2
Thanks a lot
Can you plz try to answer other two
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