Question

How to find volume of both cylinder and hemisphere.r=3,. length of cylinder is 14mm​

Answer 1

Answer:

Given diameter = 5 mm

hence radius =

2

5

=2.5mm

Length of capsule = cylinder + 2 hemisphere

= length of cylinder + 2 radius of hemisphere

14mm = length of cylinder +2×2.5

length of cylinder =9mm

Total surface area of capsule

⇒ curved surface area of cylinder +2× curved surface area of hemisphere

Curved surface area of cylinder =2πrh

=2×

7

22

×2.5×9

→141.42mm

curved surface are of hemisphere

=2πr

2

=39.28mm

∴ Total surface area of capsule

=141.42+2×39.28

⇒219.93≈220mm

2

Explanation:

A medicine capsule is in the shape of a cylinder with two hemisphere stuck to each of its ends. The length of the entire capsule is 14mm and the diameter of the capsule is 5mm. Find its surface area.