Answer:
Area of the red sphere is 314.2 cm²
Step-by-step explanation:
See attachment for complete details of the question
Given
<u>Blue Sphere:</u>
Radius, R = 15 cm
Surface Area, A = 2827.4 cm²
<u>Red Sphere</u>
Radius, r = 5 cm
Required
<em>Calculate the surface area of the red sphere.</em>
As long as the red sphere is similar to the blue sphere, the surface area of the sphere is calculated using the following formula
Area = 4πr²
Given that the radius of the red sphere is 5 cm
The surface area of the red sphere is calculated by substituting 5 cm for r in the above formula.
So,
Area = 4 * π * 5²
Area = 4π * 25
Area = 100 π (<em>Taking π as 3.142)</em>
Area = 100 * 3.142
Area = 314.2 cm²
Hence, the area of the red sphere is 314cm²
Answer: The correct option is D which is 20 games.
Step-by-step explanation:
Let x = total number of basketball games that was played by the team this season.
Alon started in 60% of his team’s basketball games this season. This means that he started in a total number of 60 percent of x basketball games this season.
60% of x basketball games this season = 60/100 × x
= 0.6×x = 0.6x
From the information given, Alon started a total of 12 basketball games this season. Therefore,
0.6x = 12
x = 12/0.6 = 20
Alon’s team played a total number of 20 games this season?
Half of the cards are red, and half are black. The possibility of him drawing red the first time was

. The possibility of drawing black the second time was also

. To find the possibility of both, simply multiply

by itself. What is

?