18. Write the formula to calculate the area of a triangle whose sides are unequal in.length
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Answer:
Heron's formula to calculate area of triangle of side a, b, c is.
A=
s(s−a)(s−b)(s−c)
where S=
2
a+b+c
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Required Answer
Formula to calculate area of triangle whose sides are unequal in length -
All sides unequal = Scalene triangle.
Area of scalene triangle -
Heron's formula =
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Know More -
Equilateral triangle -
- In this all three sides are equal.
- Each internal angle = 60°.
Area of equilateral triangle -
Perimeter of equilateral triangle -
- 3 × side
Isosceles triangle -
- In this two sides of triangle are equal.
Area of isosceles triangle -
Perimeter of isosceles triangle -
- 2a + b
where,
- a = two equal sides.
- b = the unequal side.
Scalene triangle -
- In this triangle all sides are unequal.
Perimeter of scalene triangle -
- Perimeter = Sum of all three sides
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