2 (a) The area of a rectangular garden is 6256 m If the length of the garden is 92 m, what is its width? (b) The perimeter of a rectangular window is 240 cm. If the width of the window is 51 cm, what is its length?

Find the measure of the interior angles of the following regular polygons: a triangle, a quadrilateral, a pentagon, an octagon, a decagon, a 30-gon, a 50-gon, and a 100-gon.

If the sales price of a dvd is $20 and the markup is 34%, what is the cost of the dvd?

Each person in an it department of 25 people works on at least one of 3 major projects: system security, program implementation, platform development. 10 people work on system security, 13 work on program implementation, and 12 work on platform development. 4 people work on system security and platform development, 5 people work on program implementation and platform development, and 2 people work on all three projects. how many people work on system security and program implementation?