Question

find the cost of laying grass in a triangular field of sides 50m, 65m, and 65m at the rate of Rs. 7 per m2.

Answer 1

Semi perimeter of the field (s) =(50+65+65)/2
= 180/2
= 90 cm
By heron's formula,
Area of the triangle = √s(s-a)(s-b)(s-c)
=√90(90-50)(90-65)(90-65)
=√90(40)(25)(25)
=√3600×25×25
=60×5×5
=300×5
=1500m^2
Cost of laying grass = 1500×7
=₹10500

Answer 2

Hey dear here is the answer✨

Answer:

Sides _ A = 50 m

B = 65m

C= 65m

Perimeter = (50+65+65)

P = 180

Semi.P = 180/2

Semi.P = 90

❣️With the the help of heron's formula

Area= √S (S-a)(S-b)(S-c)

√90(90-50)(90-65)(90-65)

√90*40*25*25

√1500

1500m^2

✨ now,

☆The cost of laying grasses will be- 1500*7

(rupee10500) will be the answer

Hope it helps.

✌️✨

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