Question

side of triangle are in a ratio of 2 : 9:10 and its perimeter is 420cm. find its area

Answer 1

Answer:

Let sides of △ are=6x,7x and 8x.

Perimeter=6x+7x+8x=21x.

21x=410 x=20.

Sides are 120,140 and 160 m

Area = S(S−A)(S−B)(S−C) [Heron's Formula]

S= 2

120+140+160=210 m

A= 210(210−120)(210−140)(210−160)

=2100

15 sq. m

Step-by-step explanation:

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Answer 2

Answer:

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