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प्रश्न
The perimeters of two similar triangles ∆ABC and ∆PQR are 36 cm and 24 cm respectively. If PQ = 10 cm, then the length of AB is
विकल्प
`6 2/3` cm
`(10sqrt(6))/3` cm
`66 2/3` cm
15 cm
उत्तर
15 cm
Explanation;
Hint:
`("Perimeter of" Delta "ABC")/("Perimeter of" Delta "PQR") = "AB"/"PQ"`
`36/24 = "AB"/10`
36 × 10 = 24 AB
AB = `(36 xx 10)/24`
AB = 15 cm
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