Question

The perimeter of a triangle is 540 cm and its sides are in ratio 25:17:12. Find the length of longest side.
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Answer 1

Answer:

GIVEN : The perimeter of a triangular field = 540m

Let the sides are 25x , 17x , 12 x

Perimeter of a ∆ = sum of three sides

25x + 17x + 12x = 540

54x = 540

x = 10

1st side (a) - 25x = 25×10= 250m

2nd side(b)= 17x = 17×10= 170m

3rd side (c)= 12x = 12 × 10 =120m

Semi - perimeter ( S) = a+b+c/2

= (250 + 170+120)/2 = 540/2 = 270 m

Area of the ∆= √ S(S - a)(S - b)(S - c)

[By Heron’s Formula]

= √ S(S - 250)(S - 170)(S - 120)

= √ 270(270 - 250)(270 - 170)(270 - 120)

= √ 270× 20×100×150

= √ 81000000

Area of the ∆= 9000 m²

Hence, the Area of the ∆= 9000 m²

HOPE THIS ANSWER WILL HELP YOU...

Answer 2

Answer:

here is ur answer

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Question:-

The perimeter of a triangle is 540cm and it's sides are in the ratio 25 : 17 : 12 . Find the length of the longest side.

Solution: -

☆Given•••

perimeter of triangle = 540 cm

ratio of sides = 25: 17 : 12

■ let the sides of the triangle be 25x , 17x and 12x

concept used :-- sum of all sides of the

triangle is equal to its perimeter...

25x + 17x + 12x = 540 cm

=》 54x = 540 cm

=》 x = 10 cm

therefore,,,,,

the sides are :-

● 25x = 25×10 cm = 250cm

● 17x = 17× 10cm = 170cm

● 12x = 12× 10cm = 120cm

Answer:-

the longest side of the triangle is 250cm.

☆☆HoPE iT hELpS you