Question:
If the side of an equilateral triangle is increased by 20%, find the percentage increase in its area.
यदि समबाहु त्रिभुज की भुजा 20% बढ़ जाए, तो क्षेत्रफल में कितने प्रतिशत की वृद्धि होगी?
Options:
- a) 40%
- b) 44%
- c) 36%
- d) 42%
- a) 40%
- b) 44%
- c) 36%
- d) 42%
correct answer : b)
Explanation:
Area ∝ side². New side = 1.2s. New area = (1.2)²s² = 1.44s². Increase = 44%.
क्षेत्रफल ∝ भुजा²। नई भुजा = 1.2s। नया क्षेत्रफल = 1.44s²। वृद्धि = 44%।