Question

4 Calculate the inner and outer diameter of the washer.if
the cross sectional area ofawasher is 264 cm and the
width of the washer is 2cm.​

Answer 1

Answer:

66

Step-by-step explanation:

The formula for finding the area of circular ring whose inner and outer diameter is given below:

Area \ of \ circular \ ring = \pi\left(R^{2}-r^{2}\right)Area of circular ring=π(R

2

−r

2

)

=\frac{22\left(11^{2}-10^{2}\right)}{7}=

7

22(11

2

−10

2

)

=\frac{22 \times 21}{7}=

7

22×21

=\frac{462}{7}=

7

462

The \ area \ of \ circular \ ring \ is \ 66 \ \mathrm{cm}^{2}The area of circular ring is 66 cm

2