question_answer

Direction (Qs. 49 to 51): Chinku is making a design using coloured papers. He cut out a square of side 10 cm as shown in fig. A. Then he cut out small squares of side 1 cm from various sections of the large square as given in fig. B. Look at the figures and answer the questions that follow:

What is the perimeter of fig. B?

A) 46cm                          

B) 56cm

C) 66cm                          

D) 76cm

Correct Answer: B

Solution :

    Perimeter of fig. B = 3 + 1 + 1 + 1 + 2 + 1 + 1 + 1 + 3 + 3 + 1 + 1 + 1 + 2 + 1 + 1 + 1 + 3 + 3 + 1 + 1 + 1 + 2 + 1 + 1 + 1 + 3 + 3 + 1 + 1 + 1 + 2 + 1 + 1 + 1 + 3 = 56cm. Therefore, the answer is option (b) 56cm.