# grade 10 math homework help!?

1. The front of Glenn’s property is 80 metres wide and he would like to plant some cedar hedges for privacy. He needs to plant a tree every 4 feet. How many trees would he need to purchase?

2.Find the surface area of the following right cone if the slant height is 3 feet and the radius is 20 inches. (use 3.14 for pi)

3.On a ruler marked in inches, what measure is one half of the distance between 7 1/4 inchesand 8 3/4 inches?

4.A furniture manufacturer uses 2 by 4’s to build tables. Each 8 foot long 2 by 4 is cut into 3 pieces; one piece measures 2 ft 6 inches, the second one measures 3 ft 4 inches, and the third piece measures 1ft 2 inches. If the saw blade makes a 3/16 of an inch kerf [width of cut], the amount remaining of each 2 by 4 after the three cuts is inches. True or false?