Answer:
The ratio of sides in a 30-60-90 triangle is 1:√3:2. Since the shortest side is the 1 in this case the other lengths are 15√3 and 30.
A. Isn't the answer because 9 can't go into 60
B. This is your answer 45 inches
C. and D. can't be the answer because 15 can't go into 50 or 36
15 * 3 = 45
9 * 5 = 45
I hope this helps you out, I had taken me a while to figure out what it was asking. ^-^
The formula A=1/2bh is used to find the area of a triangle. You can find from the diagram that the base of this triangle is 9cm, and the height is 4cm. Plug those numbers into the area of a triangle formula.
A=1/2(9)(4)
Multiply to get 18 square cm, which is choice D.
1.54x10^-5, hope this helps
