Aptitude - Volume and Surface Area - Discussion
Discussion Forum : Volume and Surface Area - General Questions (Q.No. 13)
13.
What is the total surface area of a right circular cone of height 14 cm and base radius 7 cm?
Answer: Option
Explanation:
h = 14 cm, r = 7 cm.
So, l = (7)2 + (14)2 = 245 = 75 cm.
 Total surface area |
=  rl + r2 |
|||||||||
|
||||||||||
| = [154(5 + 1)] cm2 | ||||||||||
| = (154 x 3.236) cm2 | ||||||||||
| = 498.35 cm2. |
cm2Discussion:
11 comments Page 2 of 2.
Parag said:
1 decade ago
The area of a circular cricket ground is 20096 sq. M to mark boundary line 5m inside from the outer edge of the four run marking, how many metre rope is needed?
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