Question

sphe ness 9. The area of a square field is 36 m². How long would it take for a bird to cross it diagonally flying at the rate of 30 V2 m/min? 20. The​

Answer 1

Answer:

The area of the square field: 36m2'

30 V2

Step-by-step explanation:

Diagonally flying = /

m/min = each 60s

Answer 2

Answer:

1/5 min = 12 sec

Step-by-step explanation:

Area of square =side^2

36 = side^2

\sqrt{36}

36

= side

6 m = side

Now,

By using pythagoras theorem,

diagonal^2=side^2+side^2

d^2=6^2+6^2

d^2=36+36

d^2=72

d=\sqrt{72}

72

d=6\sqrt{2}6

2

m

time = \frac{distance}{speed}

speed

distance

(distance = 6\sqrt{2}6

2

m; speed = 30\sqrt{2}30

2

m/min)

time =( \frac{6\sqrt{2} }{30\sqrt{2} }

30

2

6

2

) min

time = \frac{1}{5}

5

1

min

1/5 min = [(1/5) * 60]sec = 12 seconds