Answer:
The surface area of the composite figure is 
Step-by-step explanation:
we know that
The surface area of the composite figure is equal to the surface area of the rectangular prism of the bottom plus the lateral area o the rectangular prism of the top
so
Step 1
Find the surface area of the rectangular prism of the bottom
The surface area is equal to

Find the area of the base B



substitute

Step 2
Find the lateral area of the rectangular prism of the top
The lateral area is equal to



substitute

Step 3
Find the surface area of the composite figure

Hey there! I'm happy to help!
Hey there! I'm happy to help!
First, let's find the area of the circle of the first cylinder. To do this, we square the radius and multiply by 3.14.
3²=9
9×3.14=28.26
Now we multiply by our height of 49 cm to see how much water there is.
28.26×49=1384.74
Now, let's find the area of the circle of the 7 cm cylinder.
7²=49
49×3.14=153.86
Now, we will take our liquid amount (volume) and divide by this circle amount (base) to find the number of centimeters of height of the water column.
1384.74÷153.86=9
So, the height of our water column will be 9 cm.
Have a wonderful day and keep on learning! :D
2/6 or 2/3 simplify the fraction
Answer:
490 pi units^3
Step-by-step explanation:
The volume of a cylinder is given by
V = pi r^2 h
The diameter is 14 so the radius is 14/2 = 7
V = pi (7)^2 * 10
V =490 pi
this is what would make sence for me
the frist one was confusing