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If the perimeter of a scalene triangle is 23 cm, with side 1 with Length 12 cm and side 2 with Length 3 cm. Find the Length of third side.

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in Mathematics – Class 8 by (91.0k points)
If the perimeter of a scalene triangle is 23 cm, with side 1 with Length 12 cm and side 2 with Length 3 cm. Find the Length of third side.

(a) 23 cm

(b) 12 cm

(c) 2 cm

(d) 8 cm

This question was addressed to me in homework.

I'm obligated to ask this question of Applications of Linear Equation (Create and Solve the Equations) topic in portion Linear Equations in One Variable of Mathematics – Class 8

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Right option is (d) 8 cm

The best explanation: Perimeter of a scalene triangle = Length of side 1 + Length of side 2 + Length of side 3

∴ 23 = 12 + 3 + Length of side 3

∴ 23 = 15 + Length of side 3

∴ Length of side 3 = 8 cm.

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