Question

Find the area of
(1) Perimeter
rea of each of the following triangles
meter = 90 cm; Ratio of sides 2:3:4​

Answer 1

Answer:

perimeter = 90cm

sides = 2:3:4

9--------90

2--------20

3--------30

4--------40

so, sides are 20,30 & 40cm

area of ∆ = √s(s-a)(s-b)(s-c)

S = 90/2 = 45 cm

putting values we get,

area = √45*5*15*25 = 290.47 cm² (Ans)

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Answer 2

Answer:

Ratio of sides =2:3:4:x

Product of mean term =product of extreme term

2×x=3×4

x=3×4/2

x=12/2

x=6

area of triangle =90cm×6

=540cm

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