Question

find the capacity of a water container (in litres)having the height 15cm and radii of circles at its two ends are 5cm and 3cm​

Answer 1

Step-by-step explanation:

volume of cylinder = pi.R².h

height =15cm

R1² = 5²cm

R2²= 3²cm

R = R1²+R2²/2

5²+3² = 17

R = 17cm

22/7×17²×15=13,624cm²

area of circle = pi.R1²

22/7×25 =78.5 cm²

area of 2nd circle = pi.R2²

22/7. 9 = 28.28CM²

then sum of 2 circles = 78.50+28.28 =106.78

area of cyclinder+ sun of 2circles

13,624+ 106.78 = 13,730.28 lts