Use this and put in 8 for r 
26.24
The actual dimensions of the garden are 17.5m by 12.5m.
the calculus are below
First set the fractions into improper fractions...
29/9 * 12/7 = 348/63
simplify 116/21
turn back into mixed fractions and you get 5 11/21
Answer:
24 balloons
Step-by-step explanation:
1 hour= 60 min
60 min/ 5 min= 12 min
12 min* 2 balloons= 24 balloons per hour
<h2>What about Grumpy?</h2><h3>Don't pay attention to Grumpy, it was just to confuse you. We are talking about how fast <u>Felicity</u> can inflate balloons.</h3>