A steel reinforcing rod is 12 ft. long and 1" thick in diameter. If a cubic foot of steel weighs 490 lb., how much does the rod weigh (to the nearest pound)?

Answer 1

V = pi*r^2 * L = pi * (0.5/12)^2 * 12 =
5.45*10^-3 Ft^3. = Vol. of rod.

Wt.=490Lbs/Ft^3 * 5.45*10^-3Ft^3 = 2.67
Lbs.

Answer 2

lee wants to cut this piece of canvas into two rectangles that are 3 times 2 and 3 times 5 he wants the sum of the areas of the two small rectangles to be the same as the area of the large rectangle can he do this explain