Question

the sides of triangle are 7 by 2 cm 11 by 4 cm and 16 by 5 cm find its perimeter​

Answer 1

☆ Given ☆

• We are Given with three sides of a triangle.

☆ To Find ☆

• Perimeter Of Triangle.

☆ Solution ☆

Perimeter Of Triangle = Side + Side + Side.

So Add All The Sides.

7/2 + 11/4 + 16/5

Take L.C.M, L.C.M. = 20.

(70 + 55 + 64)/20

189/20cm OR 9.45cm.

Hence, The Perimeter = 9.45 cm.

Answer 2

Given :-

• Three Sides of Triangle.

To Find :-

• Perimeter of triangle.

Solution :-

So, We will take side as s.

$\sf \: \: \: \: \: \: \: \: \: \: \: {Formula\implies} \\ \\ \sf \: \: \: \: \: {Perimeter \: of \: \triangle \: = \: }{\textsf{\textbf{s + s + s}}} \\ \\ \sf \: \: \: \: \: \: \: \: \: {Add \: all \: sides} \\ \\ \implies\sf{\frac{7}{2} + \frac{11}{4} + \frac{16}{5} } \\ \\ \sf \: \: \: \: \: \: {So, \: we \: will \: take \: LCM} \\ \\ \sf \: \: \: \: {LCM = \: }{\textsf{\textbf{20}}} \\ \\ \implies\sf{ \frac{(70 + 55 + 64)}{20}} \\ \\ \implies{\textsf{\textbf{189/20}}}$

Hence,

• The perimeter of triangle = 189/20 or 9.45 centimetre.