area and perimeter

Flashcard
•
Mathematics
•
4th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the formula for calculating the area of a rectangle?
Back
Area = length × width.
2.
FLASHCARD QUESTION
Front
What is the formula for calculating the perimeter of a rectangle?
Back
Perimeter = 2 × (length + width).
3.
FLASHCARD QUESTION
Front
If a rectangle has a length of 10 meters and a width of 5 meters, what is its area?
Back
50 square meters.
4.
FLASHCARD QUESTION
Front
If a rectangle has a perimeter of 30 meters and a width of 5 meters, what is the length?
Back
Length = (Perimeter/2) - width = (30/2) - 5 = 10 meters.
5.
FLASHCARD QUESTION
Front
What is the area of a rectangle with a length of 8 cm and a width of 3 cm?
Back
24 square centimeters.
6.
FLASHCARD QUESTION
Front
How do you find the missing measurement of a rectangle if you know the area and one side?
Back
Use the formula Area = length × width to solve for the missing side.
7.
FLASHCARD QUESTION
Front
What is the perimeter of a rectangle with an area of 36 square feet and a width of 4 feet?
Back
Perimeter = 2 × (length + width). First, find length: Area = 36 = length × 4, so length = 9. Then, Perimeter = 2 × (9 + 4) = 26 feet.
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