1/4 hour is the same as 15 minutes. If it takes 15 minutes to paint 1/3, then it would take 45 minutes to paint the whole wall.
Answer:
angle BED and angle DEB are the answers.
Answer:
153.86 square feet
Step-by-step explanation:
The formula for the area of a circle is A=πr2
area = pi x radius squared
the radius is 7 feet, square that to get 49
multiply 49 by pi to get the area: 153.86 square feet

We know that

because of the Pythagorean trig identity

.
It took him 20 seconds to fill out each one of those balloons. 20x3=60 seconds= 1 minute