Question

A toy is in the shape of a right circular cylinder with a hemisphere on the top. The radii

of cylindrical hemispherical parts are 5cm each and height of cylindrical part is 13cm.

Find the cost of painting the curved surface area at the rate of 2RS/- per square cm.​

Answer 1

$\huge{\fcolorbox{cyan}{black}{\red{ANSWER:-}}}$

Height of the cylindrical part =13cm

Radius of cone , cylinder and hemi sphere=5cm

r=5cm for hemisphere cylinder and cone.

Height of cone h=30−5−13=12

The area of canvas required=Surface area of hemishphere,cylinder and cone parts of tent

A=2πr2+2πrH+πr(h2+r2)

A=2π×5×5+2π×5×13+π×5(52+122) 

A=770cm2

Hope it helps..!!

Answer 2

Answer:

Height of the cylindrical part =13cm

Radius of cone , cylinder and hemi sphere=5cm

r=5cm for hemisphere cylinder and cone.

Height of cone h=30−5−13=12

The area of canvas required=Surface area of hemishphere,cylinder and cone parts of tent

A=2πr2+2πrH+πr(h2+r2)

A=2π×5×5+2π×5×13+π×5(52+122)

A=770cm2

Step-by-step explanation:

please mark as brainlist answer and thanked also