Question

The curved surface area and the volume of a toy, cylindrical in shape, are 132 cm square and 462 cm cube respectively.find, it's diameter and it's length

Answer 1

• Let the radius=R  

• Height=H  

• Curved surface area of a toy = 132 cm2  

2πrh = 132 cm2  

R^2=(132)^2 / (2πh)^2  

• Volume of toy=462cm^2  

πr^2h=462  

R^2=462/πh  

Equating both R values ti find H value  

462/πh = (132)^2 / (2πh)^2  

H=3 cm  

Finding R value  

2πrh=132 cm2  

R=132 / (2*3.14*3)  

R=7cm