Rectangle

There is a rectangle with a length of 12 cm and a diagonal 8 cm longer than the width. Calculate the area of a rectangle.

Correct answer:

S =  60 cm2

Step-by-step explanation:

a=12 cm u = 8+b u2 = a2+b2 = 122 + b2  (8+b)2 = 122 + b2 16b = 80  b=80/16=5 cm u=a2+b2=122+52=13 cm  u = 8+b  S=a b=12 5=60 cm2



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