Answer:
Area of red band is 
Step-by-step explanation:
We know that area of square = 
Please refer to the attached figure, we have to calculate the area of red band.
Required area = Area of square <em>ABCD </em>- Area of <em>purple square
</em>
Side of purple square = 
So, area of purple square = 
<em>ABCD </em>is a square with purple square at the center and there is symmetry in the figure.
So, width of red band towards both the end is 5 inches.
Required area = 
Using formula 
Hence, Area of red band is
Answer:
32π is the volume of the larger sphere
Step-by-step explanation:
The volume of a sphere is V = 4/3πr³. The smaller sphere is V = 4π. This means r³ divided by 3 was 1. So r³ = 3. For the larger sphere, substitute r = 2r into the volume formula.
V = 4/3πr³
V = 4/3π(2r)³
V = 4/3π8r³
We know from the previous problem that r³ = 3.
So the volume formula simplifies to V = 4π(8) = 32π
Answer:
Step-by-step explanation:
Mary bought 20 oranges in a store, 5 of them she used for a cake. How much percent oranges did she use?
