Question

The figure shows the layout of a symmetrical pool in a water park. What is the area of this pool rounded to the tens place? Use the value pi = 3.14.

Answer 1

https://cdn.ple.platoweb.com/EdAssets/e0c89421fb1d473bbebf9aba9df2e4f5?ts=635387467626630000

Answer 2

@Michele_Laino @jigglypuff314

Answer 3

hint:
area of each triangle, is:
20*25/2=...?

Answer 4

250?

Answer 5

ok!

Answer 6

ok

Answer 7

now the area of each sector, is:
\[\Large area = \frac{1}{2}\theta \times {r^2} = \frac{1}{2} \times 221 \times {30^2} = ...?\]

Answer 8

oops..2.21 not 221

Answer 9

\[\Large area = \frac{1}{2}\theta \times {r^2} = \frac{1}{2} \times 2.21 \times {30^2} = ...?\]

Answer 10

so, what is:
\[\frac{1}{2} \times 2.21 \times {30^2} = ...?\]

Answer 11

900

Answer 12

900*2.21/2=...?

Answer 13

1098

Answer 14

I got:
994.5

Answer 15

oh

Answer 16

so, the area of half pool is:
994.5+250=...?

Answer 17

and the area of your pool, is:
2*(994.5+250)=...?

Answer 18

2239

Answer 19

I got:
2*(994.5+250)=2489

Answer 20

oh