Question

@hartnn

Answer 1

A circular ring of radius 6 inches is reshaped into an arch of a circle of radius 4 feet
Show that this arch subtends 45 degrees at the centre..

Answer 2

how do you convert inches to feet?

Answer 3

i mean whats your attemp at this question?

Answer 4

I converted 6 inches into 2 feet.
calculated the are and perimeter of the circle.

Answer 5

6 inches is 2 feet?
or 0.5 feet?

Answer 6

Whoops!
I made a calculation error.
I took 12 on the other side.
So

12 times x = 6 times 1
so x = 0.5?

Answer 7

yes

Answer 8

what next?

Answer 9

so,
entire circle radius is 0.5 feet.

what part of the circle will correspond to arc of 4 feet?

Answer 10

its like

0.5 --> 360 degrees
4 ----> x degrees

Answer 11

Isn't the radius of the circle 4 feet?

Answer 12

radius of the arc is 4 feet