What is the area of a rectangular baking pan that's 10 inches wide by 12 inches long?
Hint
A = lw
Answer
120 in2
Example 2
Solve for the area of the rectangle below.
Hint
Who invited Pythagoras?
Answer
240 in2
Example 3
What area of your bedroom floor does your twin size bed (39 inches wide and 75 inches long) take up?
Hint
"Wide" and "long" sound like "width" and "length," don't they?
Answer
2925 in2
Example 4
You're (finally) off to college! Your dorm room has an extra-long twin size bed, which is 5 inches longer than your twin bed at home. How much more area do you get with an extra-long twin as compared to a regular twin size bed (39 by 75 inches)?
Hint
Subtract the area of the regular twin from the area of the extra-long twin bed.
Answer
195 in2
Example 5
You're trying to set the table for Thanksgiving, and you have a square napkin with a side length of 8 inches. What's the total area of the napkin?
Hint
A = s2
Answer
64 in2
Example 6
The square napkin with side lengths of 8 inches doesn't fit at the place settings unless it's folded into fourths. After folding the napkin in half one way and folding it in half again the other way, what is the area?
Hint
After folding it once in each direction, the side length is 4 inches.
Answer
16 in2
Example 7
The town square in Tiny-ville is 169 Tiny-meters2. What is the length of a side?
Hint
Answer
13 Tiny-meters
Example 8
A square TV screen has a diagonal of 3 feet. What is the area of the screen?
Hint
Use what you know about 45-45-90 triangles to find the length of a side.
Answer
4.5 ft2
Example 9
You decide to get your boyfriend a box of fudge for his birthday. At the Fudge-tastic store, you can buy a 4 × 3 inch piece of fudge for $6. At the Fudge-licious store, you can buy a 1 foot × 1 inch bar of fudge for $6. If the fudge pieces are of equal thickness, which store should you buy from for the better deal?
Hint
Compare the price per area for each location to see which offers a better price.
Answer
They're both the same price ($0.50 for each square inch of fudge).
Example 10
Your new mansion has no pool, and summer is fast approaching. If you have a backyard that's 250 by 250 yards and you want to build a pool that's 100 by 50 yards, what percentage of your backyard space will the pool occupy?
Hint
The percentage is the area of the pool divided by the area of your backyard multiplied by 100%.
