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Q.

Question Image

The figure is made up of 2 rectangles What is the perimeter of the big rectangle?


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a

11r+12 cm

b

22r+24 cm

c

11r cm

d

11r+6 cm  

answer is B.

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Detailed Solution

Given a figure,
Question ImageFrom the figure,
Length of big rectangle l=7r+3+3cm
Length of big rectangle=(7r+6)cm
Breadth of a big rectangle b=4r+3+3cm
Breadth of big rectangle =(4r+6)cm Perimeter of big rectangle =2(l+b)cm Perimeter of big rectangle =2[(7r+6)+(4r+6)]cm Perimeter of big rectangle =2[11r+12]cm Perimeter of big rectangle =22r+24cm So, perimeter of big rectangle is 22r+24 cm.
Hence, the correct option is 2.
 
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