The width of the rectangle is 60 cm, which is 4/5 of its length. Calculate the perimeter and area of the rectangle.
| May 26, 2021 | education
The task :
a = 60 cm
b = 4/5 a cm
P =?
S =?
Decision :
1. Determine the length of the rectangle
60 4/5 = 48 centimeters
2. Calculate the perimeter of the rectangle
P = (a + b) 2 = (60 + 48) 2 = 108 2 = 216 centimeters
3. Find the area of the rectangle
S = a b = 60 48 = 2880 square centimeters
Answer: P = 216 cm, S = 2880 cm ^ 2
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