The answer is 52.
20+52=72
The mean is the average of the numbers. It is easy to calculate: add up all the numbers, then divide by how many numbers there are. In other words it is the sum divided by the count.
12 | 3*4=12 therefor any number that is divisible by 3 and 4 is also divisible by 12
The surface area of any solid is the summation of all the areas of its faces. For a square prism, the surface area is therefore calculated through the equation,
A = 6e²
where A is area and e is the measure of the side.
From the given above, it is stated that the edge of the prism measures 6. Substituting this value to the equation above,
A = (6)(6²)
A = 216
Therefore, the surface area of the given prism is equal to 216 square units.
Alright, lets get started.
space that is 7.0 cm long and 4.0 cm wide it means space is in rectangular shape.
The lenght of the space = 7 cm
The width of the shape = 4 cm
The formula of area of rectange = length * width
The area of rectange = 
The area of rectange = 28 square cm
So, the area of the space you are aiming for 28 square cm. : Answer
Hope it will help :)
