Question

The area of the base of a right circular cone is 314 cm square and its height is 15 cm find the volume of the cone.use (pie=3.14)







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Answer 1

Answer:

area of base of right circular cone [area of circle] = 314cm square

pie . r^2 = 314

3.14 [ r]^2 = 314

r^2 = 314/3.14

r^2 = 100

r = 10

radius of cone = 10cm

height of cone = 15cm

volume of cone = pie [ r]^2 [h]

here pie.r^2 = 314

volume = 314[15]

volume of cone = 4710 cm cube

Answer 2

Volume of cone=1/3(pi*r^2*h)
=1/3( area of base)*h
= 1/3* 314* 15
1570 cm^3