Question

could someone please help me understand how to find the area of a sector of a circle with a 40degree angle?? !!!!!!!!!!!!!!!!!!!!!!!!!!!!

Answer 1

Since a circle has 360 deg. at the centre, the area of the sector is (40/360)*pi*r^2

Answer 2

thanks, but is that just an equation for all problems like this or ????

Answer 3

Yes, you can do it the same way for other angles. Substitute 40 deg. by the new angle. The drawing should give a good idea why this works.

Answer 4

so would the answer to the problem above be 8.72cmsq

Answer 5

It's possible, but I don't know the radius.

Answer 6

5cm

Answer 7

Yes, that what I got too!

Answer 8

awesome! okay so 1 more problem, errrg math