Answer:
Area of sector = 21.195 cm²
length of arc = 4.71 cm
Step-by-step explanation:
Given:
Radius of circle (r) = 9 Cm
Angle at O = 30°
Find:
Area of sector.
length of arc.
Computation:
⇒ Area of sector = [θ/360]πr²
Area of sector = [30/360]3.14(9)²
Area of sector = 21.195 cm²
⇒ length of arc = [θ/360]2πr
length of arc = [30/360]2(3.14)(9)
length of arc = 4.71 cm
Answer:
The answer is -1.25
Hope that helps. x
Step-by-step explanation:
Answer:
1) 36\pie Phi is constant (pie)
2) the ball has greater value
Step-by-step explanation:
1) d=6 so r=d/2=3
V=4\pie *r^3/3= 4*3^3\phi/3=36\pie
2) for the first figure:
V= 4*4^3\pie/3= 256\pie /3
V2=BH/3=r^2\pie*H/3=3^2*6,5\pie/3=58,5\pie/3
256/3 > 58,5/3
So the ball has greater volume
Hello,
Let's x the ones digits
2x is the tens digit
Number is 2x*10+x
Sum of digits is 2x+x=12
==>3x=12
==>x=4
Number is 84