ABC26GN4640 · Area

Subject: General Aptitude · Chapter: Area · Exam: · Marks: · Difficulty:

The area of the incircle of an equilateral triangle of side 42 cm is

(a)$22 \sqrt{3} \mathrm{cm}^{2}$

(b)$231 \mathrm{cm}^{2}$

(c)$462 \mathrm{cm}^{2}$

(d)$924 \mathrm{cm}^{2}$

Answer

Answer (as printed): C

Explanation

Radius of incircle = = cm = 7 3 cm. 2 3 2 3  22  Area of incircle =  × 49 × 3 cm 2 = 462 cm 2 .  7  a

Explanation as extracted from the printed page; notation may be imperfect.