Listen Find the surface area of the regular pyramid. 10 yd yd² 9 yd 7.8 yd Previous 1 2 3 4 5 6 7 8 9 Next

Determine the cross-sectional area of a regular octagon cross-section tool steel piece shown. The piece weighs 3.72 pounds. The tool steel weighs 0.284 pound per cubic inch.

Three pieces, each in the shape of a sector, are cut from the rectangular sheet of steel shown. How many Square meters are wasted after the three pieces are cut? Round the answer to the nearest tenth meter.

Show that there is no triangle for which a=4 feet, b=14 feet, and A=60.