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The perimeter of two similar triangles ABC and PQR are 36 cms and 24 cms respectively. If PQ = 10 cm then the length of AB is
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- 18 cm
- 12 cm
- 15 cm
- 30 cm
- 18 cm
Correct Option: C
Given that , The perimeter of two triangles ABC and PQR are 36 cms and 24 cms. and PQ = 10 cm
∆ ABC ~ ∆ PQR
| ∴ | = | = | |||
| PQ | QR | PR |
| = | ||
| PQ + QR + PR |
| ⇒ | = | ⇒ | = | ||||
| PQ | 24 | 10 | 2 |
| ⇒ AB = | × 10 = 15 cm. | |
| 2 |
