The circumference of a circle is 60π cm. What is the length of an arc of 140°?

Question

anonymous · Answer

From Circumference given, first find radius..

$$2 \pi r = 60 \pi$$

anonymous · Answer

Calculate r here..

anonymous · Answer

still confused

anonymous · Answer

Where??

anonymous · Answer

can you tell me step by step?

anonymous · Answer

See, you are given with circumference..

Do you know the formula for Circumference??

anonymous · Answer

2 pi r

anonymous · Answer

or pi X diameter

corrrect

anonymous · Answer

So just equate them and find r there..

anonymous · Answer

that's my problem... I don't kknow how to equate them

anonymous · Answer

$$C = 2 \pi r$$
$$60 \pi = 2 \pi r$$
Divide by 2pi both the sides to find r..

anonymous · Answer

I did it!! thank you. can I get more help?

anonymous · Answer

Sure.. If I know I will surely help..

anonymous · Answer

The corresponding sides of two similar rectangles are 6 ft and 10 ft. The area of the smaller rectangle is 78 ft2. To the nearest whole number, what is the area of the larger rectangle?

anonymous · Answer

Length of an Arc Formula= circumference * angle/360 =$$60\pi * 140/360$$

anonymous · Answer

i need new help

anonymous · Answer

so whats the answer? lol