Answer:
Step-by-step explanation:
Given that,
The surface Area of a cube is equal to the sum of the 6 Square faces
And each side has a length of 's'
Formula to calculate the surface area is
A = 6s²
Given that the surface area is 1944 units²
It is a straight forward question,
The questions already gave us the formula for area of a cube and which is 6s² and the question said that if the area is 1944 unit², find 's'
So,
A = 1944
6s² = 1944
s² = 1944 / 6
s² = 324
s = √324
s = 18 units
So, the value of s- is 18 units
2
351
x 5
-------
1,755
351 x 5 = 1,755
40 is the answer to the problem.
The new mean is 66.09
<u>Explanation:</u>
Mean weight of 20 students = 65kg
One student with 88kg entered the room.
New mean = ?
The above equation can further be written as:
New mean =
= 66.09
Therefore, the new mean is 66.09
Answer:
2
Step-by-step explanation: