4th Class Mathematics Area, Perimeter and Volume Question Bank Perimeter & Area

  • question_answer The figure given has a perimeter of 51 cm. \[\text{AB}=\text{CD}=\text{AD}=\text{12 cm}.\] Find the length of the curved line.

    A)  12 cm            

    B)    15 cm

    C)    27 cm            

    D)    39 cm

    Correct Answer: B

    Solution :

    The perimeter of the given figure = AB + CD + AD + CB \[=(\text{12}+\text{12}+\text{12}+\text{CB) cm}\] \[=\text{ (36}+\text{CB) cm}=\text{51 cm}\] (Given) \[\therefore \]  \[\text{CB}=(\text{51}-\text{36})\text{ cm}=\text{15 cm}\]


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