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Preview questions
1. What is Heron's formula used for?
Finding the area of a triangle · Finding the perimeter of a triangle · Finding the angles of a triangle · Finding the height of a triangle
2. If the sides of a triangle are a, b, and c, what is the semi-perimeter (s)?
(a + b + c) / 2 · (a + b + c) / 3 · (a + b + c) / 4 · (a + b + c) / 5
3. Which of the following is the correct formula for the area of a triangle using Heron's formula?
√(s(s-a)(s-b)(s-c)) · s(s-a)(s-b)(s-c) · s^2(s-a)(s-b)(s-c) · √(s^2(s-a)(s-b)(s-c))
4. If a triangle has sides 7 cm, 8 cm, and 9 cm, what is the semi-perimeter?
12 cm · 14 cm · 24 cm · 16 cm
5. For a triangle with sides 5 cm, 12 cm, and 13 cm, what is the area using Heron's formula?
30 cm² · 24 cm² · 36 cm² · 60 cm²
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