English, asked by chetankatigar, 1 year ago

find the area of a triangle whose all sides are equal and sum of the 3 sides is equal to 12cm

Answers

Answered by doshi1953
2

Let all equal sides be a.

a+a+a=12

3a=12

a=12/3

a=4

Now apply the formula

Area = root3/4×a square

=root 3 / 4 × 4 ×4

= root 3 × 4

= 1.73 ×4 (substituting value of rootas 1.73)

= 6.92 (answer)


chetankatigar: thank you so much
Answered by shizukasharma7
0

Soln,

Given that, sum of all three sides= 12 cm

Therefore,

a+b+c= 12 cm

3a = 12 cm (all sides are equal)

a = 4


Hence, area (equilateral triangle)=√3a^2/4

= √3×4×4/4

=4√3 cm^2

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