Question

A field in the form of right triangle with side 90 m and 120 m respectively containing the right angle calculate the cost of levelling the field at the rate of Rs. 12 per sq m

Answer 1

Answer:

Rs. 6480

Step-by-step explanation:

A field is in the form of right angled triangle with side 90m and 120m respectively containing the right angle.

so, area of triangle = 1/2 × height × base

hence, area of field = 1/2 × 120m × 90 m [ see figure to understand]

= 60 × 90 m²

= 540 m²

A/C to question,

leveling the field at the rate 12 Rs/m²

so, cost of the leveling of the whole field = area of field × rate

= 540 × 12

= Rs.6480

Answer 2

Answer:64800

Step-by-step explanation:

Area = 90×120÷2

=5400

1 m^2 = 12 rupees

5400 m^2 = 64800