The width of a rectangle is equal to 15 cm and its length is 3 cm.
Calculate the area of the rectangle.
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The width of a rectangle is equal to 15 cm and its length is 3 cm.
Calculate the area of the rectangle.
To calculate the area of the rectangle, we multiply the length by the width:
45
Look at the rectangle below.
Side DC has a length of 1.5 cm and side AD has a length of 9.5 cm.
What is the perimeter of the rectangle?
Area measures the space inside a shape. When you multiply 15 × 3, you're finding how many square centimeters fit inside. Adding gives you perimeter - the distance around the outside.
No! For rectangles, length × width = width × length. Whether you do 15 × 3 or 3 × 15, you'll get the same area of 45 cm².
Area is measured in square units because we're multiplying two lengths together. cm × cm = cm². This tells us we're measuring a 2-dimensional space, not just a distance.
Imagine the rectangle divided into unit squares. You have 15 rows with 3 squares in each row, giving you 15 × 3 = 45 total unit squares!
Don't worry! Since multiplication is commutative, 15 × 3 = 3 × 15. The area will be correct regardless of which dimension you multiply first.
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