Problem
Jane has five coins totaling 35 cents. Each coin is either a penny, a nickel, a dime, or a quarter. After using two of the coins ...
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So What?
You'll probably see at least one question involving prime numbers.
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ACT: Math Question #4 |
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Question:
A garden needs to be covered with grass sod. The garden has the dimensions shown above. How many square feet of sod are required to cover the garden?
Choices:
The correct answer is D. The problem is asking you to determine the area of the figure. There are a few ways to do this. You could break the figure into 3 rectangles and add their areas. However, a quicker method is to consider the figure a solid rectangle by drawing a line from one of the bottom "legs" to the other.
| The area of that rectangle would be 30 feet |
× |
40 feet |
= |
1,200 |
| square feet. But that's too big; you have to subtract from this the |
| area of the 12 foot |
× |
12 foot square that isn't really part of the |
| garden. That square is 12 |
× |
12 |
= |
144 |
square feet. |
| 1,200 square feet - 144 square feet = 1,056 square feet. |
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