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CDS Maths(1)
The sides of a triangle are in the ratio \( \Large \frac{1}{2} \) : \( \Large \frac{1}{3} \) : \( \Large \frac{1}{4} \) If its perimeter is 52 cm, then what is the length of the smallest side?
A) 9 cm
B) 10 cm
C) 11 cm
D) 12 cm
Correct Answer:
D) 12 cm
Description for Correct answer:
Perimeter of\( \Large \vartriangle ABC = \left(\frac{1}{2} + \frac{1}{3} + \frac{1}{4}\right)x \)
\( \Large 52 = \left(\frac{6 + 4 + 3}{12}\right)x \)
\( \Large x = \frac{52 \times 12}{13} \)
x = 48
Sides of triangle are 24, 16, 12
Smallest side of triangle is 12 cm
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