In the circle above, with centre O and radius 7 cm. Find the length of the arc AB, when < AOB = 57°.

Abraham_Ekhator

6 years ago

Length of arc = x/360 X 2/\r
where x= 57° and radius(r)=7cm
Length of arc= (57/360 X 2 X 22/7 X 7)cm
L= (0.1583 X 2 X 3.143 X 7)cm
L= 6.9655cm ~ 6.97cm
:. The correct answer is D: 6.97cm

TCSS2025B

4 months ago

I can't see any diagram

bodunyefa

6 years ago

length of the arc is ¤/360x2(22/7)r. therefore, 57/360x2x22/7x7
=6.97cm