Question

Answer this question...​

Answer 1

Step-by-step explanation:

hey friends here is your answer

Answer 2

Answer:

66 cm^3

Given,

Diameter of the model is 3 cm and length is 12 cm.Each cone has a height of 2 cm.

To Find,

Volume of air contained in the model.

Solution,

For Upper Conical portion,

Diameter of the model = 3 cm.

Radius = 3/2 = 1.5 cm

Height h = 2 cm

Volume = 1/3πr²h

==> 1/3 * π * (1.5)² * 2

==> 4.5/3 π

==> 1/5 π cm²

For Lower conical portion,

Volume = 1.5 π cm³

Radius R = 1.5 cm

Height H = 12 - (2 + 2) = 8 cm

Volume = πR²H

==> π(1.5)²*8

==> 18π cm³

We have to find Volume of model.

==> 1.5π + 1.5π + 18π

==> 21π

==> 21 * 22/7

==> 66 cm³

Result,

Volume of the air contained in the model = 66 cm³

#Hope my answer helped you.