Simplify:
Simplify.

44−−√

440−−√

411−−√

222−−√

211−−√

Acircular garden with radius of 8 feet is surrounded by a circular path with a width of 3 feet. what is the approximate area of the path alone? use 3.14 for π

Mario is constructing a frame for 10 in. by 8 in. photo. he wants the frame to be the same with all the way around in the same area of the frame and photo to be 120 square inches what is the dimension of the frame?

The difference of three and the reciprocal of a number is equal to the quotient of 20 and the number. find the number.