Question

The external diameter of the barrel og air gun is found to be 1.62 cm and the thickness of rhe metal is 7 mm .find the internal diameter in cm?

Answer 1

Hey Dear,

◆ Answer -

Internal diameter = 0.22 cm

◆ Explanation -

External radius of the gun is -

External radius = 1.62 / 2

External radius = 0.81 cm

Internal radius of the gun will be calculated as -

Internal radius = external radius - thickness

Internal radius = 0.81 - 0.7

Internal radius = 0.11 cm

Thus, internal diameter of barrel gun is -

Internal diameter = 2 × internal radius

Internal diameter = 2 × 0.11

Internal diameter = 0.22 cm

Internal diameter = 2.2 mm

Therefore, internal diameter of the barrel of gun is 0.22 cm.

Hope this is helpful....

Answer 2

Answer:

Answer will be 0.22 cm

Step-by-step explanation:

external radius= 1.62/2

= 1.81 cm

since, internal radius = external radius-thickness

= 1.81-0.7 cm

=0.11 cm

therefore, internal diameter= 2 x internal radius

= 2 x 0.11

= 0.22 (answer).