Question

please answer this quest 21​

Answer 1

Answer:

Step-by-step explanation:

perimeter = 600m

let y be the variable

5y+12y+13y = 600m

30y = 600m

y = 600/30

y = 20

sides,

side 1 = 5y = 5 x 20 = 100m

side 2 = 12y = 12 x 20 = 240m

side 3 = 13y = 13 x 20 = 260m

Area of the triangular plot :

= apply heron's formula(because no base and height is mentioned)

s=(a + b+ c)/2

(100+240+260)/2

s=600/2

s=300

s - a = 300 - 100 = 200

s - b = 300 - 240 = 60

s - c = 300 - 260 = 40

heron's formula = square root of s(s-a)x(s-b)x(s-c)

square root 300 x 200 x 60 x 40

take the commen out

square root 3 x 100 x 2 x 100 x 3 x 2 x 10 x 2 x2 x 10

=3 x 2 x 100 x 10 x 2

area of the triangular plot = 12000m xm