Answer:

Step-by-step explanation:
Given that,
The diameter of the cylinder, d = 10 m
Hight, h = 14 m
Radius, r = d/2 = 5 m
We need to find the lateral area of the cylinder. The formula for the lateral area of the cylinder is given by :

So, the lateral surface area of the cylinder is equal to
.
-2 the slope is the a value ( in this case 2) in the formula y=ax+b. The value before the x is the slope. So for every x value you increase you go down by 2
The quotient when
in simplified form is 
<h3>What is an equation?</h3>
An equation is an expression that shows the relationship between two or more numbers and variables.
Given that equation:


The quotient when
in simplified form is 
Find out more on equation at: brainly.com/question/2972832
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Answer: 200cm
Step-by-step explanation:
The center Planck is a square of length 8cm.
The 4 next planks are of 16 cm each
And the next 4 Planks are of 32 cm each.
8 + 4(8×2) + 4(8×4)
8 + 4(16) + 4(32)
8 + 64 + 128
200 cm
Length of the original plank is 200cm