The length of the field is twice its breadth. Find the perimeter, of the field.
A) 24 cm
B) 72 cm
C) 36 cm
D) 288 \[\text{c}{{\text{m}}^{\text{2}}}\]
Correct Answer: B
Solution :
Length of the field = 2 \[\times \] Breadth \[=\text{2}\times \text{12 cm }=\text{24 cm}\] Perimeter \[=\text{ 2}\times (l+\text{b})\text{ unit}\] \[=\text{ 2}\times \text{(12}+\text{24) cm }=\text{ 2 }\times \text{ 36 cm }=\text{ 72 cm}\]
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