17.Mohan lives in Hyderabad in Telangana. Those were very hot days of May. He thought that
if we human beings need so much of water to drink, won`t the birds also be thirsty. He
decided to prepare a vessel to provide water for birds. He found a flexible blue coloured
plastic rectangular sheet 44cm x 15 cm. He rolled it along its length and joined ends using a
tape. He wanted to have a circular base for this cylinder and searched for another sheet. He
found a square sheet 15cm x 15cm . He got a circular sheet just equal to the base of the
cylinder cut from it.
Find the volume of water that can be filled in the cylinder
Answers
Step-by-step explanation:
The length of the rectangular sheet is 44cm which means it is the circumference of the base circle.
Now,
Circumference of the circle=2πr
44 =2×22/7×r
44 =44/7×r
44×7/44=r
7 =r
Therefore the radius is of 7 cm.
Next,
Volume of the cylinder=πr^2h
=22/7×7×7×15
=154×15
= 2310
Therefore the volume of the water that can be filled in the cylinder is 2310ml.
Answer:
CSA =660 cm²,r=7, area of circular base=154cm²,volume=2310cm³
Step-by-step explanation:
CSA=l×b
44×15
=660cm²
finding radius:
660=2×22/7×r×15
660=660/7r
r=660×7/660
=7 cm
finding area of base:
pie×r²
22/2×7×7
=154 cm²
volume:
pie×r²h
22/7×7×7×15
=2320cm³
hope you understood it.....