Question

1. The area of a triangle is 150 cm 2 and its sides are in the ratio 3:4:5. What is
its perimeter?
10 cm
30 cm
45 cm
O 6oom
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Answer 1

Answer:

let the sides be in the ratio be x

sides = 3x 5x and 4x

area = 1÷2 × b × h

area = 150cm^2

150= 1÷2× 4x × 3x

150= 6x^2

x = 5

sides = 25cm, 20cm , 15cm

perimeter = sum of all sides = 60cm

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