Question

Triangle D F G is shown. The length of D F is 11, the length of F G is 6, and the length of D G is 9. Heron’s formula: Area = StartRoot s (s minus a) (s minus b) (s minus c) EndRoot What is the area of triangle DFG? Round to the nearest whole square unit. 27 square units 38 square units 364 square units 728 square units

Answer 1

27 units

Explanation:

correct answer on edge

Answer 2

27 square units

Explanation:

To use Heron's formula, you need to know that "s" represents half the perimeter.

s = (11 +6 +9)/2 = 13

Then the area is given by the formula as ...

A = √(13(13 -11)(13 -6)(13 -9)) = √(13·2·7·4) = √728

A ≈ 26.98 ≈ 27 . . . square units