You are designing a sail for a raft built of five-gallon cans lashed together that will compete in a race during a company picnic. You design a right triangle shaped sail that is fifteen feet high with a base of seven feet. How many square feet of canvas will be required to make your sail? What will be the perimeter of the triangular sail from problem 4? (Points: 3)
I am not sure what formulas I need to use
2007-02-25 07:17:57 · 5 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
15 times 7 divided by 2= square feet needed. Hypotenuse is 15squared+7squared, square rooted. add hypotenuse to 15 and 7 and thats the perimeter
2007-02-25 07:20:28 · answer #1 · answered by I want u2 hit me as hardas u can 2 · 0⤊ 0⤋
As it is a right triangle
S = 15*7/2 = 52.5 sq feet
You´ll find the third side applying Pythagoras
c= sqrt(15^2 +7^2) =16.55 3 feet so perimeter = 16.553+15+7 =
38.553 feet
2007-02-25 15:25:58 · answer #2 · answered by santmann2002 7 · 0⤊ 0⤋
someone answered part 1.
im answering part 2.
to find perimeter you add up all the sides.
to find the 3rd side, use the pythagorean theorem.
a^2 + b^2 = c^2
15^2 + 7^2 = c^2
225 + 49 = c^2
274 = c^2
square root(274) = c
16.553 = c
now 16.553 + 15+7 = 38.553
2007-02-25 15:27:27 · answer #3 · answered by Ari 6 · 0⤊ 0⤋
A = .5bh = .5(7)(15) = 52.5 sq ft.
15^2 + 7^2 = 274 sqrt 274 â 16.6
16.6 + 15 + 7 = 38.6 ft
2007-02-25 15:45:59 · answer #4 · answered by DJ Fox 1 · 0⤊ 0⤋
the formula for the triangle
A=1/2(bxh) meaning base (seven) times height (15) all of that divided by two. 52.5sq ft and dont forget your units
2007-02-25 15:21:58 · answer #5 · answered by parkindel 1 · 0⤊ 0⤋