If the width and height of a rectangular prism are each shrunk to one seventh of the original size but the length remains the same, what is the formula to find the modified surface area

SA =

Step-by-step explanation:

The surface area of a rectangular prism is given by :

Where l stands for length

w stands for width

h stands for height

Given is - If the width and height of a rectangular prism are each shrunk to one seventh of the original size but the length remains the same.

So, length = l

width =

height =

The new surface area will be =

SA =

Simplifying this we get:

SA =

There are many other ways to write this but it has the same meaning, so, we can take this as the answer.

SA =

the formula for converting absorbance to transmittance goes as:

a = log (1/t)  a = 2 - log(%t)  10^a = 1/t  t = 10^-a  %t = 100(10^-a)

so at the given value of a,   a = 1.5

%t = 100(10^-1.5)

%t = 3.16%