Question

Find the area of a triangle two sides of which are 18cm and 10cm and the perimetre is 42.

Answer 1

Answer:

l = 18 cm, b = 10 cm or perimeter = 42

perimeter = l+ b + h

42 = 18cm + 10cm + x

42 = 28 cm + x

x = 42 - 28 cm

x = 14 cm

Area of triangle = l× b× h

= 18 cm × 10 cm × 14 cm

= 2520 cm^3

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Answer 2

Answer:

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