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| Answer: Equilateral triangle. |
| 1. Area of circle: |
| Circle diameter is 2√2 cm. |
| So radius of circle is √2 cm. |
| Area of circle is &pi r² = 2&pi = 6.283 square cm (approximately) |
| 2. Area of equilateral triangle: |
| Side of equilateral triangle = 4 cm. |
| Area of equilateral triangle = (√3/4)a² |
| = 4√3 = 6.928 square cm (approximately) |
| 3. Area of triangle with sides 3,4 and 5 cm: |
| The triangle with sides 3, 4 and 5 is a right angled triangle. |
| 5 cm being the hypotenuse, 3 and 4 are the other two sides. |
| Area of triangle =(1/2)bh = (1/2)x3x4 = 6 square cm. |
| Winners:Sravya Ainapurapu, Bharadwaj Ainapurapu, Raghu Ayinapurapu, Rajeswararao Ainapurapu, |
| Sumanth Nethi, Gampa Narasimhamurty, Sruthi Ainapurapu. |
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