Let’s solve each problem one by one. We’ll figure out whether to use
area or
perimeter, then calculate carefully.
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Problem 1:
Dr. Delilah wants to fence an outdoor space that is 20 feet long and 20 feet wide.
→ Fencing goes *around* the edge → that’s
perimeter.
It’s a square (same length and width), so perimeter = 4 × side
But even if it were rectangle: Perimeter = 2 × (length + width)
So:
Perimeter = 2 × (20 + 20) = 2 × 40 =
80 feet
✔ Answer:
80 feet of fencing needed
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Problem 2:
Old MacDonald has a square farm, each side 208 feet. He walks around the edge → again,
perimeter.
Square perimeter = 4 × side
= 4 × 208
Let’s compute:
4 × 200 = 800
4 × 8 = 32
Total = 800 + 32 =
832 feet
✔ Answer:
He will walk 832 feet
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Problem 3:
George’s bedroom: “12 feet square” → means 12 ft by 12 ft → area = 12 × 12
Jerry’s bedroom: 11 ft long and 13 ft wide → area = 11 × 13
We’re comparing floor space → that’s
area
George: 12 × 12 = 144 sq ft
Jerry: 11 × 13 → let’s do 10×13 = 130, plus 1×13 = 13 → 130+13=143 sq ft
144 > 143 → George has more floor space.
✔ Answer:
George has more floor space
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Problem 4:
Playground is a rectangle: 100 yards long, 75 yards wide.
“Distance around” → that’s
perimeter
Perimeter of rectangle = 2 × (length + width)
= 2 × (100 + 75) = 2 × 175 =
350 yards
✔ Answer:
The distance around is 350 yards
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Problem 5:
Mr. Rabbit’s garden is square-shaped, 8 feet on each side.
“How many square feet will it cover?” → covering ground → that’s
area
Area of square = side × side = 8 × 8 =
64 square feet
✔ Answer:
It will cover 64 square feet
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Final Answer:
1) 80 feet
2) 832 feet
3) George
4) 350 yards
5) 64 square feet
Parent Tip: Review the logic above to help your child master the concept of area and perimeter word problem worksheet.
