Which of the following is /are true?
A. Attitude is required for calculating area by heron’s formula.
B. Attitude is not required for calculating area by heron’s formula.
C. Semi-perimeter is required for calculating area by heron’s formula.
D. Semi-perimeter is not required for calculating area by heron’s formula.
Answer
B and C
Explanation
By Heron’s formula,
Area = √s(s-a)(s-b)(s-c),
Where s = semi – perimeter and a, b, c are side lengths
Semi-perimeter = sum of side lengths/2
So, only the semi-perimeter and the side lengths are required.