If the perimeter of an equilateral triangle is 180 cm. The its area will be
a) 900cm2
b) 900√3 cm2
c) 300√3 cm2
d) 600√3 cm2
Answers
Answered by
17
Answer :-
B) 900√3 cm sq.
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Answered by
4
Step-by-step explanation:
Perimeter is “the sum of all sides “ or this is a equilateral triangle so the perimeter is “3*side”
By giving question the perimeter is 180
So,we will find the side of this triangle
Perimeter= 3 X side
180=3 X side
Side =180/3
Side = 60
Now the area of a equilateral triangle is
A= (√3/4)(side)^2
A=(√3/4)(60)^2
A=(√3/4)(3600)
A=(√3)900
A=(1.7320)900. ( The value of √3 is 1.7320)
A=1558.85 cm^2.
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