Question

The longest side of a right triangular field is 90 m and one of the remaining two sides is 54 m
(i) Find the area of the field
(ii) Find the cost of laying the grass on the field at 12 per m².​

Answer 1

Answer:

(i)1944m²

(ii) ₹23328

Step-by-step explanation:

Longest side = hypotenuse= 90m

one side = 54 m

take hypotenuse as c

one side = a

By Pythagoras Theorem

c² = a² + b²

90² = 54² + b²

-b² = 2916 - 8100

-b² = -5,184

b² = 5,184

b = √5184

b = 72m

(i)    area = $\frac{1}{2}$bh

area = $\frac{1}{2}$×54 × 72

area = 27 × 72

area = 1944m²

(ii)    Cost of laying grass per m² = ₹12

1944 × 12

= ₹23,328

Hope this helped

Answer 2

Answer:

answer I the attachment

hope it helps you

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