Question

the minute hand of a clock moved from 2.15 to 7.15 on the face of the clock. if the length of the minute hand is 7 cm, find correct to 2 significant figure the area swept by the minute hand take (tir 22/7). please explain it well and step by step​

Answer 1

Answer:

65 sq cm

Step-by-step explanation:

It moves 5hrs from 2:15 to 7:15, angle made in 1 hr is 30, angle made in 5hrs is 150

If we imagine the area swept, it looks like a sector

We know that the area of a sector is--->

thita/360 x Pi x r x r

Where thita is the angle made at centre

Pi is 22/7

r is the radius or 7cm

Substituting values, we get--->

150/360 x 22/7 x 7 x 7

=64.16 sq cm

Or 65sq cm

Hope you understood!