(2.5)^2 + (16.5)^2 = c^2
c = sqrt(2.5^2 + 16.5^2)
c = sqrt(278.5)
c = 16.69
Rounded up it would be 17, so the answer is D.
First find half of the perimeter of the triangle: s = (a + b + c) / 2 = 11.095
Then the area is:
A = Square Root [11.095 (11.095 - 7.7)(11.095 - 5.2)(11.095 - 9.29)] = 20.01999895 or 20.02 square feet rounded to 2 decimal places.
Answer:
Step-by-step explanation:
(1): "a2" was replaced by "a^2"
((2a2 + 8ab) - 3a) - 12b
2a2 + 8ab - 3a - 12b
-3, -1, 1, 3, 5 would be five of them.