Area and Perimeter Practice Test 1

Question : 40 of 40

Marks: +1, -0

If the perimeter of an equilateral triangle is 72 cm, its area will be

Solution:

Here, 3x = 72 ⇒ x =

{72}/3

= 24 cm.
∴ Area of the equilateral triangle =

√3/4 × x^2

√3/4 × (24)^2

144 √3

sq. cm.

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