Please help me! There is a picture.
1 answer:
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Answer:
Step-by-step explanation:
If J can paint a room in 3 hours, in 1 hour she gets of the job done.
If A can paint a room in 4 hours, in 1 hour she gets of the job done. We need to find out how long it takes them if they paint together. The equation for this is:
where x is the number of hours it takes them to get the job done together. Multiply everything through by 12x to get
4x + 3x = 12 so
7x = 12 and
x = 1.7 hours to get the room painted together.
Answer:
14 cm.
Step-by-step explanation:
Let the radius of the circle = r cm.
Then circumference of circle = 2 π r.
Since circumference exceeds the radius by 74 cm
Therefore, according to the question,
- Hence, the radius of the circle is 14 cm.
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