the volume of the right circular cone is 9856 cm cube if the diameter of the base is 28 centimetre find height of the cone and curved surface of the cone
Answers
Answered by
3
Step-by-step explanation:
d=28cm
r=d/2=28/2=14cm
volume of cone= 9856 cm²
=} 1/3πr²h = 9856
=} h=(9856×3)/πr²
=} h=(9856×3×7)/22×14×14
=} h= 206976÷4312
=} h=48cm
so, the height of the cone = 48cm.
l = √h²+r²
=√ 48²+14²
=√2304+196
=√2500
=50cm
curved surface area= πrl
=22/7×14×50
= 2200 cm²
Similar questions