Question

If the perimeter of equilateral triangle is 144 cm ? then measure of its
side is
A) 12 cm.
B) 15 cm.
C) 48 cm.
D) 24 is
​ ​

Answer 1

Question-

If the perimeter of equilateral triangle is 144 cm ? then measure of its side..

Answer-

48 cm

Step by step explanation-

P=3a

a=p/3=144/3

=48 cm

Hope it helps you...

Answer 2

$\bigstar \frak{ \underline{ \underline \purple{Given:}}}$

➠ Perimeter of an equilateral Triangle = 144 cm

$\bigstar \frak{ \underline{ \underline \purple{To \; Find:}}}$

➠ Measure of it's each side

$\bigstar \frak{ \underline{ \underline \purple{Solution:}}}$

➠ As we know that

Perimeter of a equilateral Triangle = 3 × Side

➠ Let's find out !!

$\sf \rightarrow 144 \; cm = 3 \times Side$

$\sf \rightarrow Side = \dfrac{144}{3}$

$\sf \rightarrow Side = 48 \; cm$

∴ Measure of its side is 48 cm

$\bigstar \frak{ \underline{ \underline \purple{More\;about\;triangle:}}}$

❶ Perimeter of a triangle = Sum of all sides

❷ Area of a triangle =  $\sf \dfrac{1}{2} \times base \times height$

❸  Area of Equilateral Triangle  = (√3/4)side²

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