143k views
4 votes
Find the area of washers whose external and internal diameter are 1.2m and 0.9m

User Mariu
by
8.2k points

1 Answer

1 vote

Answer:

0.49 m²

Explanation:

The area (A) is calculated using A = πr² ( r is the radius )

A = external area - internal area

external radius =
(1.2)/(2) = 0.6

internal radius =
(0.9)/(2) = 0.45

A = π(0.6² - 0.45²)

= π(0.36 - 0.2025) = 0.1575π ≈ 0.49 m²


User Zin Win Htet
by
8.8k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories