Circumference 72984

Task 1 - The circumference of the square is 280 mm. What is its area?
Task 2 - the perimeter of the rectangle is 44.6dm, and its width is 6.3dm. Calculate the area of this rectangle.

Correct answer:

S1 =  49 cm2
S2 =  100.8 dm2

Step-by-step explanation:

o1=280 mm cm=280:10  cm=28 cm o1=4a a=o1/4=28/4=7 cm  S1=a2=72=49 cm2
o2=44.6 dm y=6.3 dm  o2=2x+2y x=o2/2y=44.6/26.3=16 dm  S2=x y=16 6.3=100.8 dm2

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