Answer:
6.3 meters long.
Explanation:
It is given that the band has a banner at the back of the stage. It is 21 feet long.
We have to convert it to meters.
1 foot = 30 cm
21 feet = 21 × 30 = 630 cm
Now we convert 630 cm to meter.
1 meter = 100 cm
630 cm =
= 6.3 meters
The banner is approximately 6.3 meters long.