Question

Find the perimeter of

i) A scalene triangle with sides 7 m, 8 m, 10 m

ii) An isosceles triangle with equal sides 10 cm each and third side is 7 cm.

iii) An Equilateral triangle with side 6 cm.

Answer 1

i) Perimeter of a scalene triangle = (7 + 8 + 10) m = 25 m

ii) The three sides of the isosceles triangle are 10 cm, 10 cm and 7 cm

∴ Perimeter = (10 + 10 + 7) cm = 27 cm

iii) An equilateral triangle with side 6 cm.

The sides of equilateral triangle are 6 cm, 6 cm and 6 cm

∴ Perimeter = (6 + 6 + 6) cm = 18 cm