Question

The breadth of a rectangle is increased by 2 units. Its perimeter is now increased by?
A) 2 units B) 4 units C) 8 units D) 16 units

Answer 1

hye

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let do this in a simple method

=>perimeter of rectangle = 2[l+b]

2 *l +2*b

=>2l +2b

now the breadth is increased by 2 units

=>new perimeter = 2[l +2+b]

=>now lets mutiply it

=>(2*l)+(2*2)+(2*b)

=>2l +4 +2b 

old perimeter was 2l +2b


whereas new perimeter is 2l +4 +2b (or) 2l +2b +4

increase in new perimeter = new perimeter - old perimeter

                                            = (2l+2b  +4) - (2l +2b)

                                              = 4 units

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hope it helps u..................

                              

                        

Answer 2

Answer:

the answer is

4 unit

is correct