Find the area of an equilateral triangle having each side 4 cm. - Mathematics

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Short Note

Find the area of an equilateral triangle having each side 4 cm.

 
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Solution

Area of an equilateral triangle having each side a cm is given by 

`A=sqrt(3)/4a^2`

Area of the given equilateral triangle having each equal side equal to 4 cm is given by

a = 4 cm

`A= sqrt(3)/4 (4)^2`

`A=sqrt(3)/4 xx 16`

`A = 4 sqrt(3)  cm^2`

 

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Chapter 17: Heron’s Formula - Exercise 17.3 [Page 24]

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RD Sharma Mathematics for Class 9
Chapter 17 Heron’s Formula
Exercise 17.3 | Q 4 | Page 24

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