The rectangle is 3cm wide and 4 times longer. Find the perimeter and area of the rectangle.
| April 1, 2021 | education
Decision:
1) Find the length of the rectangle
3 * 4 = 12 (cm)
2) To calculate the perimeter of a rectangle, add the length of all sides
P = 3 + 3 + 12 +12 = 30 (cm)
3) To calculate the area of a rectangle, you need to multiply the width by the length
S = 3 * 12 = 36 (cm square)
Answer: P = 30 cm, S = 36 cm square.
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