Calculate 4215

Calculate the length of the side of the rectangle if you know its perimeter and the other side:
a) o = 100 m: b = 2.5 m
b) o = 80 cm: a = 20 mm
c) o = 38.6 dm: b = 45 cm
d) o = 88 mm: a = 2.5 cm

Correct answer:

a =  47.5 m
b =  380 mm
c =  148 cm
d =  1.9 cm

Step-by-step explanation:

a=100/22.5=47.5 m
b=80 10/220=380 mm
c=38.6 10/245=148 cm
d=88/10/22.5=1.9 cm



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