202k views
0 votes
find the volume of a cone with a radius of 10 mm and a hight of 6 mm. please help! ill be ur friend if u get it correct!!! :-D

User Dvjanm
by
8.4k points

2 Answers

5 votes
The answer is: " 628 mm³ " ; or, write as: " 200π mm³ " .
________________________________________________
Explanation:
________________________________________________

Formula for the Volume of a cone:
____________________________________
V = (⅓)*π*r² * h ;
____________________________________
in which:

V = volume (which we want to solve);
π (pi) ≈ 3.14 ;
r = radius (of circle at the base of the cone = 10 mm ;
h = height (perpendicular height) = 6 mm ;
________________________________________________
There are 2 (TWO) possible answers:

1) Let's start with finding the volume of this cone, 'in terms of π' ;
_____________________________________________________
V = (⅓)*π*r² * h ;
_____________________________________________________
Plug in known values, except keeping the "π" (pi) symbol as it is ;
______________________________________________________
V = (⅓)*π*(10 mm)² * (6 mm) ;

V = (⅓)*π*(100 mm² * (6 mm) ;

→ V = 200π mm³ .
_______________________________________________
2) Now, let us find the numeric volume of this cone:
_______________________________________________
The volume of the cone:

V = (⅓)*π*r² * h ;
_____________________________________________________
Plug in known values ; INCLUDING "3.14" as an approximation for "π" ;
______________________________________________________
V = (⅓)*(3.14)*(10 mm)² * (6 mm) ;

V = (⅓)*(3.14)*(100 mm²) * (6 mm) ;
__________________________________
→ (⅓)*(100 mm²) * (6 mm) = 200 mm³

→ V = (3.14) * 200 mm³ ;

→ V = 628 mm³ .
____________________________________
User Jay Rajput
by
8.2k points
2 votes
628.32mm is the answer, i also thing you have to cube it 
User Geert Olaerts
by
7.2k points
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories