Question

Find the length of the diagonal of a rectangular football pitch with sides 42.7 m and 76.8 m.
Give your answer rounded to 1 DP.

Answer 1

Answer:

area of diagonal

1/2×d1 × d2

1/2 × 427/10 × 768/10

1,639.68

Answer 2

when we draw a rectangle and its diagonal we find a right angled triangle diagonal as its hypotnuse.

let x be the length of triangle.

(42.7)^2+(76.8)^2=(x)^2

1823.29+5,898.24=(x)^2

7,721.53=(x)^2

x=87.87m

x=88m (approx)