Question

the length of rectangular notebook 15 centimetre and the perimeter is 50 cm find the area of the notebook​

Answer 1

Answer:

perimeter = 2l + 2 b

   50         = 2(15) + 2b

50  - 2(15)  = 2b

50 - 30 = 2b

20 = 2b

b = 10cm

therefore area of rectangle = l (b)

                                              = 15 * 10

                                              150 cm²

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