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  • The height of an equilateral triangle is 10 cm. Its area is (in cm2)Option: 1 50Option: 2</s

The height of an equilateral triangle is 10 cm. Its area is (in cm2)

Option: 1

50


Option: 2

100


Option: 3

50\sqrt3


Option: 4

\frac{100}{\sqrt3}


Answers (1)

best_answer

Given that, the height of an equilateral triangle is 10 cm. 

\\\frac{\sqrt3}{2}a=10\\a=\frac{20}{\sqrt3}

area =  \frac{\sqrt3}{4}\left ( a^2 \right )=\frac{\sqrt3}{4}\left ( \frac{20}{\sqrt3} \right )^2=\frac{100}{\sqrt3}

 

Posted by

vinayak

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