Answer:
Step-by-step explanation:
This will form a hollow circular part of a cylinder of outer radius 7cm and inner radius 3cm
Area of a circle is given by πr^2.
Then, the big circle of radius 7cm
Area= πr^2
Area=22/7×7×7
Area =154cm^2.
Area of the circle of radius 3cm
Area= πr^2
Area=22/7×3×3
Area =28.286cm^2.
Area of the shaded part becomes
Big area - small area
154-28.286
Area of shaded part = 125.7143cm^2
Then to the nearest hundredth
Area of shaded part =125.71cm^2
Answer:
X= 35 degrees
Step-by-step explanation:
Well, we know that 20+x+x=90 because angle ml is a 90 degree angle.
Then, we make an equation; 20+x+x=90
WE solve for x, by combining like terms, so it would now be 20+2x=90
We subtract 2 from both sides, making it 2x=70
Then divide both sides by 2 , making it x=35
We have a ball with Volume=9203 cubic inches
V sphere =(4 pi r^3)/3
9203=4/3 * 3.14*r^3
9203*3=4*3.14*r^3
(9203*3)/4*3.14=r^3
r^3=27609/12.56=2198.16
r=∛2198.16=13
r=13
Answer:
m>-20
Step-by-step explanation:
to leave m alone you need to multiply -2 to the other side but when you do that the sign changes because its by a negative.