2TL
1 answer:
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Answer:
142
Step-by-step explanation:
This is a Total Surface Area problem.
The box has 6 faces (sides): front, back, left, right, top, bottom. They are all rectangles. Area of a rectangle is length × width.
You find the area of each face and add them all up.
see image.
TSA = 15+15+21+21+35+35
= 30+42+70
= 142 sq inches
Erica needs 142 pieces of paper to decorate her box.
Answer: No, Cammie is not correct. She can mow in one hour (See explanation).
Step-by-step explanation:
Convert the mixed number to an impoper fraction:
1. Multiply the whole number part by the denominator of the fraction and add the product to the numerator.
2. The denominator does not change.
Then:
Let be "x" the acres Cammie can mow in one hour.
You know that she can mow in 25 minutes, then you can set up the following proportion (Remember that 1 hour has 60 minutes):
Solving for "x", you get:
Convert from improper fraction to mixed number:
1. When you divide 6 by 5, the quotient is 1. This will be the whole number part.
2. The remainder is 1. This will be the numerator.
3. The denominator does not change.
Then:
Therefore, she can mow in one hour.