find the area of an equilateral triangle whose sides are 20 cm each
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area of equilateral triangle = √3/4× (side)^2
= √3/4×400
=100√3
= √3/4×400
=100√3
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Given :-
- Side of equilateral triangle is 20 cm each.
To Find :-
- The area of equilateral traingle = ?
Answer :-
- The area of equilateral traingle = 100√3 cm²
Explaination :-
→ Area of equilateral traingle = √3/4 × (side)²
→ Area of equilateral traingle = √3/4 × (20)²
→ Area of equilateral traingle = √3/4 × 400
→ Area of equilateral traingle = √3 × 100
→ Area of equilateral traingle = 100√3 cm²
Therefore,the area of equilateral triangle is 100√3 cm².
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Extra Shots :-
- Volume of cylinder = πr²h
- T.S.A of cylinder = 2πrh + 2πr²
- Volume of cone = ⅓ πr²h
- C.S.A of cone = πrl
- T.S.A of cone = πrl + πr²
- Volume of cuboid = l × b × h
- C.S.A of cuboid = 2(l + b)h
- T.S.A of cuboid = 2(lb + bh + lh)
- C.S.A of cube = 4a²
- T.S.A of cube = 6a²
- Volume of cube = a³
- Volume of sphere = 4/3πr³
- Surface area of sphere = 4πr²
- Volume of hemisphere = ⅔ πr³
- C.S.A of hemisphere = 2πr²
- T.S.A of hemisphere = 3πr²
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