Find the length of a rectangle with a perimeter of 10 cm and a width of 2 cm. Draw and calculate the area.
July 24, 2021
The perimeter of the rectangle is 10 cm;
The width of the rectangle is 2 cm;
The length of the rectangle is? cm;
The area of the rectangle is? cm²;
Let’s recall the formula for the perimeter of a rectangle:
P = 2 * (a + b);
Let us derive the value of the length of the rectangle from this formula, and then find it:
a = p / 2 – b;
a = 10/2 – 2;
a = 5 – 2;
a = 3 cm – the length of the rectangle;
Now let’s remember the area formula:
S = a * b;
Let’s use this formula and find the area of our rectangle:
S = 3 * 2;
S = 6 cm² – area;
Answer: 3 cm; 6 cm².
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