Find the volume of a frustum of base radii 7 cm and 3.5 cm and height 2cm . (use value of pie =3.14)â€‹

$Given : \mathrm{r_1}=7 \mathrm{cm} \\ r_2=3.5 \mathrm{cm}\\ h=2 \mathrm{cm} \\ Volume of frustum = \frac{\pi h}{3} \left(\mathrm{r_1}^2+\mathrm{r_2} ^ 2+\mathrm{r_1} \mathrm{r_2} \right) \\ = \frac{3.14 \times 2}{ 3}(7^2 + 3.5^2 + 7 \times 3.5 )\\ = 179. 5 \ cm^3 \\ Volume of frustum =179.5 \ \mathrm{cm}^3$

Preparation Products

JEE Main Rank Booster 2021

This course will help student to be better prepared and study in the right direction for JEE Main..

₹ 13999/- ₹ 9999/-
Rank Booster NEET 2021

This course will help student to be better prepared and study in the right direction for NEET..

₹ 13999/- ₹ 9999/-
Knockout JEE Main April 2021 (Easy Installments)

An exhaustive E-learning program for the complete preparation of JEE Main..

₹ 4999/-
Knockout NEET May 2021

An exhaustive E-learning program for the complete preparation of NEET..

₹ 22999/- ₹ 14999/-