28th question please solve this
Answers
let the naming of the cone, so it will be easier for you to understand,
so let the naming of big cone be A,B andC. same way let the naming of the small cone be A,P,Q. let the centre be O for the small cone. let the centre of big cone be M.
Ans: let the radius and height be r and h for smaller cone. similarly for bigger cone R respectively.
since , triangle AOQ~ triangle AMC ,
AO/AM= OQ/MC
h/30=r/R
r=hR/30 eq-1
since given volume of the smaller circle =1/27 (vol of larger cone)
1/3pie r square h=1/27 (1/3 pie R square × 30)
pie/3 (h×R/30)square h= 1/27 ×1/3 pie R square × 30
h cube= 30×30×30/27
Ans: h cube = 1000
h= 10 cm3.
Hope it helps , if yes plz mark as brainlest...
Thankyou
let the naming of the cone, so it will be easier for you to understand,
so let the naming of big cone be A,B andC. same way let the naming of the small cone be A,P,Q. let the centre be O for the small cone. let the centre of big cone be M.
Ans: let the radius and height be r and h for smaller cone. similarly for bigger cone R respectively.
since , triangle AOQ~ triangle AMC ,
AO/AM= OQ/MC
h/30=r/R
r=hR/30 eq-1
since given volume of the smaller circle =1/27 (vol of larger cone)
1/3pie r square h=1/27 (1/3 pie R square × 30)
pie/3 (h×R/30)square h= 1/27 ×1/3 pie R square × 30
h cube= 30×30×30/27
Ans: h cube = 1000
h= 10 cm3