Answers

  • Brainly User
2015-03-02T14:57:00+05:30
By. πr2h. 3×3×8=n×.75×.75×.2. 72=n×0.1125. So n= 640
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2015-03-02T15:26:00+05:30
Coin, r=0.75cm h=0.2cm V=pi r^2h =22/7*0.75*0.75*0.2 =2.475/7cm^3 Cylinder, h=8 cm r=3cm V= 22/7*3*3*8 =1584/7 cm^3 No. of coins=1584/7*7/2.475 =640
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