Question

calculate the area of colourful part. please​

Answer 1

Answer:

20×3+22×3=126

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Answer 2

Answer:

AREA(OUTER RECTANGLE)- AREA(INNER RECTANGLE)

AREA OF RECTANGLE= LENGTH× BREADTH

AREA OF OUTER RECTANGLE = 28*20= 560

AREA OF INNER RECTANGLE = (28-3)*(20-3)

THEREFORE THE AREA IS 25*17= 425

THUS , THE AREA OF THE COLOURED PART IS

AREA OF OUTER RECTANGLE - AREA OF THE INNER RECTANGLE

i.e. 560-425 = 135

therefore the area of the coloured part is 135cm²