2/5 of the area of a rectangle with a length of 10 cm and a width of 5 cm
| March 29, 2021 | education
2/5 of the area of a rectangle with a length of 10 cm and a width of 5 cm was painted over with a red pencil. What is the area of the red pencil.
1. Find the area of this rectangle by the formula: S = a x b.
10 x 5 = 50 (cm2).
2. Find the area of the red pencil part of the rectangle, which is equal to 2/3 of the total area:
50: 5 x 2 = 20 (cm2).
Answer: 20cm2 area of the filled part of the rectangle.
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