Question

find the area of the triangular field of side 55,60,65meters find the cost of line the grass in the triangular field at the rate of rupees 8 per metre square​

Answer 1

Answer:

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Question

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Find the cost of laying grass in a triangular field of sides 50m,65m and 65m at the rate of Rs 7 per m

2

.

Medium

Solution

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Correct option is

A

Rs 10500

Sides of the triangle are a=50m,b=65m,c=65m

Area of triangle, by Heron's formula =

s(s−a)(s−b)(s−c)

where,

s=

2

a+b+c

s=

2

50+65+65

s=90

Area of triangle =

90(40)(25)(25)

Area of triangle = 1500m

2

Cost of laying grass = Area ×7

Cost of laying grass =1500×7

Cost of laying grass = Rs 10500

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Step-by-step explanation:

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Answer 2

Answer:

The cost of laying the grass in the triangular field at the rate of Rs 8 per m² is Rs. 12296.32.