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Questions and Answers
What is the formula to calculate the area of a triangle when the lengths of all three sides are known?
What is the formula to calculate the area of a triangle when the lengths of all three sides are known?
- A = √(s(s-a)(s-b)(s-c)), where s is the semi-perimeter, and a, b, c are the side lengths (correct)
- A = a * b * sin(C), where a, b are side lengths and C is the included angle
- A = 1/2 * base * height
- A = 1/2 * (a + b + c), where a, b, c are the side lengths
What is the semi-perimeter of a triangle with side lengths 7 cm, 24 cm, and 25 cm?
What is the semi-perimeter of a triangle with side lengths 7 cm, 24 cm, and 25 cm?
- 28 cm
- 32 cm
- 35 cm
- 33 cm (correct)
In a triangle, if the lengths of two sides are 10 cm and 12 cm, and the included angle is 60 degrees, what is the area of the triangle?
In a triangle, if the lengths of two sides are 10 cm and 12 cm, and the included angle is 60 degrees, what is the area of the triangle?
- 50√3 cm²
- 60 cm²
- 72 cm²
- 30√3 cm² (correct)
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