CUET Preparation Today
What is the area (in sq cm) of an equilateral triangle of side 21 cm? |
\(\frac{441}{4}\)\(\sqrt{3}\) 443\(\sqrt{3}\) 241\(\sqrt{3}\) 471\(\sqrt{3}\) |
\(\frac{441}{4}\)\(\sqrt{3}\) |
Area of equilateral triangle = \(\frac{ \sqrt{3}}{4}\)a2 = \(\frac{ \sqrt{3}}{4}\) × 21 × 21 = \(\frac{441}{4}\)\(\sqrt{3}\) cm2 |
