Subject: General Aptitude · Chapter: Area · Exam: · Marks: · Difficulty:
What will be the cost of painting the inner walls of a room if the rate of painting is ` 20 per square foot ? I. Circumference of the floor is 44 feet. II. The height of the wall of the room is 12 feet.
Answer
SELF-PRACTICE — the source book printed no answer.
Nothing is invented here, so this question has no answer on record.
Explanation
I. Gives, $2 \pi R=44$. II. Gives, $H=12$. $\therefore \quad A=2 \pi R H=(44 \times 12)$. Cost of painting $=₹(44 \times 12 \times 20)$. Thus, I and II together give the answer. ∴ Correct answer is (e).
Explanation as extracted from the printed page; notation may be imperfect.