Question

please tell the answer for both the questions​

Answer 1

Answer:

Hey!!!

Here, cone is divided into two equal parts by the axis so, AQ = AP/2 .......(1)

Now, ∆AQD~∆APC (AA ~ty)

=>QD / PC = AQ / AP (CPST)

so, QD / PC = 1/2 ----(Using (1))

so, QD = PC/2 = R/2

now,

the volume of frustum = 1/3πR²H–1/3π(R/2)²(H/2)

                                      =1/3πR²H×7/8

Now, Therefore, Ratio:

i.e. (1/3π(R/2)²(H/2))/(1/3πR²H*7/8)

=(1/8)/(7/8)=1/7

The answer to your questions are given in the pictures attached!..

Answer 2

Hey your answer is in the given attachment

HOPE IT IS HELPFUL