Question

Perimeter of a triangle 60 cm Side 1 - 20 cm
Side 2 -25 cm
Side 3=




lesson name perimeter and area ​

Answer 1

$\huge{ \boxed{ \fcolorbox{cyan}{pink}{Answer}}}$

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• Sum of all 3 sides is equal to perimeter of that triangle.

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$\bold \pink{ : \longmapsto \: Perimeter = AB + BC + CA}$

$\bold \green{ : \longmapsto \: 60 = 20 + 25 + CA}$

$\bold \pink{ : \longmapsto \: CA = 60 - 20 - 25}$

$\bold \green{ : \longmapsto \: CA = 40 - 25}$

$\bold \pink{ : \longmapsto \: CA = 15}$

$\; \; \;$

$\boxed{ \fcolorbox{cyan}{black}{ \boxed{\bold \pink{ \boxed{ \fcolorbox{cyan}{orange}{ \boxed{\bold \purple{ Answer : Other \; side = 15 \; cm}}}}}}}}$

Answer 2

Answer:

Permiter of the triangle = 60cm

Measure of side 1 = 20cm

Measure of side 2 = 25cm

Let Measure of side 3 = 'x' cm

ATQ.

side 1 + side 2 + side 3 = perimeter

20 + 25 + x = 60

45 + x = 60

x = 60 - 45

x = 15 cm

Answer :

hence the measure of the third side is 15cm