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The diagram shows a square with perimeter 40 cm.
7 cm
Work out the percentage of the area inside
the square that is shaded.
4 cm

The diagram shows a square with perimeter 40 cm 7 cm Work out the percentage of the area inside the square that is shaded 4 cm class=

Respuesta :

thebecks

Answer:

55 cm²

Step-by-step explanation:

side length of square = perimeter/4 = 40/4 = 10 cm.

area of square = side x side = 10 x 10 = 100 cm²

area of triangle #1 = 1/2bh = 1/2(3)(10) = 15

area of triangle #2 = 1/2bh = 1/2(6)(10) = 30

100 - 15 - 30 = 55 cm²

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