Question

A solid cylinder of base 8 cm high and 4 cm in diameter is method and recut into cone if diameter 3 cm find the height of the cone​

Answer 1

we know that

22/7r.r.h=1/3.22/7.r.r.h

now r of cyl.=2

hight=8

r of cone=3/2

now

vol. of cyl.=vol. of cone

we can cancel pie from pie

now we have

2 ×2 ×8=1/3 ×3/2 ×3/2 ×h

u can solve now