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Find the perimeter of following figures :(i) Triangle whose sides are 2 cm, 3 cm and 4 cm.(ii) Equilateral triangle with side 8 cm.(iii) Isosceles triangle whose equal sides are 10 cm and the third side is 7 cm. |
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Answer» (i) Sides of triangle: 2 cm, 3 cm and 4 cm Perimeter of triangle = Sum of all sides = 2 + 3 + 4 = 9 cm (ii) Side of equilateral angle = 8 cm Perimeter of equilateral triangle = 3 x side = 3 x 8 = 24 cm (iii) Two sides of isosceles triangle = 10 cm, 10 cm Third side = 7 cm Perimeter of isosceles triangle = 10 + 10 + 7 = 27 cm |
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