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 1 of 2.
Sachin K C said:
4 years ago
l is the slant height of the cone
Formula to find slant height of the cone is √(r^2+h^2).
Formula to find slant height of the cone is √(r^2+h^2).
Diwa said:
4 years ago
How to find √5 value?
(2)
Shital said:
7 years ago
Please tell me how to solve √245? Please tell me.
Rajak said:
7 years ago
49*5=245.
49 out of root is 7.
49 out of root is 7.
D Priya said:
7 years ago
To find square roots use long division method.
Gayathri said:
8 years ago
Please explain it with steps.
Hrushi said:
8 years ago
How calculate root of 245? Please tell me.
Nishanth said:
8 years ago
How the area of the sector is π*r*l?
Sami said:
8 years ago
I need a proper explanation. Please anyone explain it.
Abinaya said:
8 years ago
Why we adding the breadth root and height root instead of subtraction?
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