Find the area of the shaded part of the rectangle if the area of the shaded part of the shape is 40% of the entire rectangle.

Let’s calculate the area of the rectangle:

5 * 7 = 35 cm2 – the area of the rectangle.

Let’s calculate the area of the filled part of the rectangle, making the proportion:

35 – 100%,

f – 40.

f = 35 * 40: 100;

f = 1400: 100;

f = 14 cm2 – area of the shaded part.

Answer: 14 cm2.



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