The rectangular floor of a classroom is 40 feet in length and 30 feet in width. A scale drawing of the floor has a length of 8 inches. What is the area, in square inches, of the floor in the scale drawing?

Emily is entering a bicycle race for charity. her mother pledges $0.90 for every 0.75 mile she bikes. if emily bikes 18 miles, how much will her mother donate?

Given: circle o, cd is diameter, chord ab || cd. arc ab = 74°, find arc ca.

White shapes and black shapes are used in a game. some of the shapes are circles. while the rest are squares. the ratio of the number of white shapes to the number of black shapes is 5: 11. the ratio of the number of white cicrles to the number of white squares is 3: 7. the ratio of the number of black circles to the number of black squres is 3: 8. work out what fraction of all the shapes are circles.