The three sides of a triangle are (9x – 5y - z)cm, (3x+y-6z)cm and (6x+15y-11z)cm. Find its perimeter.
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The three sides of a triangle are (9x – 5y - z)cm, (3x+y-6z)cm and (6x+15y-11z)cm. Find its perimeter.
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Perimeter of the triangle is 18x+11y-18z.
Step-by-step explanation:
Perimeter of a triangle = sum of its sides forming the triangle.
perimeter= (9x-5y-z)+(3x+y-6z)+(6x+15y-11z)
= 9x-5y-z+3x+y-6z+6x+15y-11z
= 9x+3x+6x-5y+y+15y-z-6z-11z
= 18x+11y-18z.
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