the sides of a rectangle taken in order are each 3 cm longer than the preceding side if the perimeter of the triangle is 81 cm find the length of its sides
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Let one side of the triangle be x cm.
then the other sides will eb (x + 3) cm and (x + 6) cm.
Perimeter of the triangle = (x + x + 3 + x + 6) = 3x + 9 cm
But , perimeter = 81 cm
so, 3x + 9 = 81
3x = 72
So,x = 24 cm.
∴ Length of all sides = 24 cm , 27 cm and 30 cm.
Hope This Helps :)
then the other sides will eb (x + 3) cm and (x + 6) cm.
Perimeter of the triangle = (x + x + 3 + x + 6) = 3x + 9 cm
But , perimeter = 81 cm
so, 3x + 9 = 81
3x = 72
So,x = 24 cm.
∴ Length of all sides = 24 cm , 27 cm and 30 cm.
Hope This Helps :)
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