Circumference 66964

We have to construct a rectangle with a circumference of 30 decimetres. The rectangle has sides of whole decimetres. How many different rectangles can we make?

Correct answer:

n =  7

Step-by-step explanation:

o=30 cm o = 2(a+b) o/2 = a+b 15 = a+b  a1=8, b1=7 a2=9, b2=6 a3=10, b3=5 a4=11, b4=4 a5=12, b5=3 a6=13, b6=2 a7=14, b7=1  n=7



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