Question

1) if the ratio of sides of a triangular field is 3:5:4 and it's perimeter is 900m. fid the area of triangular field.
2) factorise - 3x2 - 9x - 5
3) Draw the graph of linear equation 2x + 3y = 12. At what point the graph of the equation cuts the x- axis and y-axis

no answer no brainly and a report

Answer 1

Step-by-step explanation:

5x+3x+4x=180

12x=180

x=15

Sides =75,45,60

(i) S =

2

75+45+60

=

2

180

=90

Area =

90(90−75)(90−45)(90−60)

=

90×15×45×30

=1350m

2

(ii)

2

1

×75×a=1350 [Ref. image]

a=36m

(iii) Total cost =10×Area

=10×1350

=Rs.13500