What is its perimeter?
A) 35 cm
B) 40 cm
C) 45 cm
D) 50 cm
Correct Answer: C
Solution :
Length of each identical rectangle \[=\frac{12.\text{5 cm}}{5}=2.\text{5 cm}\] \[\therefore \] Perimeter of the given figure \[=(\text{5}\times \text{2}.\text{5}+\text{12}.\text{5}+\text{1}0\text{ }\times \text{ 2})\text{ cm}\] \[=(\text{12}.\text{5}+\text{12}.\text{5}+\text{2}0)\text{ cm}=\text{45 cm}\]
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