Question

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Answer 1

Answer:

2.A≈40.25cm²

explanation:

perimeter of triangle:30 cm

each side:12 cm

area =40.25cm²

3.In ∆ABC, AB = 15 cm , BC = 13 cm and AC = 14 cm. Therefore, the area of ∆ABC is 84cm² and its altitude on AC is 12 cm.

7.Altitude=Height=6 cm

Let lenght be a

so ,√3/2 a=6

So a =12/√3

so a = 4√3 cm

this a is the lenght of the side

now area =(√3/4)*a^2

so area =(√3/4*#(4√3)^2

so area= √3*4*3

so area=12√3

so area = 12*1.732

so area = 20.784 cm2

8.Sides of triangular park :

Sides of triangular park :a = 51 m

Sides of triangular park :a = 51 mb = 37 m

Sides of triangular park :a = 51 mb = 37 mc = 20 m

Sides of triangular park :a = 51 mb = 37 mc = 20 mHence the area of the field is 306 sq.m.The cost of laying grass at the rate of rupees 15 per m square is Rs.4590

HOPE THIS ALL ANSWER WILL HELP YOU

Answer 2

Answer:

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