3) Find the number of coins of 2.2 cm diameter and 0.2 cm thick, can be made from a right circular
cylinder of height 0.2 cm and diameter 8.8 cm.
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Answer:
16 coins
Step-by-step explanation:
diameter = 8.8cm
radius=d/2=4.4cm
height=0.2cm
volume= πr²h
= π*4.4²*0.2
=3.872π cm³
diameter of coin=2.2cm
radius of coin=1.1cm
thickness=0.2cm
volume of each coin = πr²h
= π*1.1²*0.2
= 0.242π cm³
no. of coins= volume of circular cylinder/volume of coin
=3.872π/0.242π
=16 coins
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