What is 144 . 7/8π? Please help.
2 answers:
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Answer:
Correct answer is
Step-by-step explanation:
As per the given diagram, we know the following details:
Height of the triangular pyramid is <em>14m</em>.
<em>Side of base</em> = <em>10m </em>
Height of Triangular base = <em>8.7m</em>
Formula for <em>surface area of triangular pyramid</em>:
(Triangular base is shown in the dotted lines in the question figure.
The other 3 triangles are the side triangles.)
We know that,
Hence correct answer is .
Answer:
.
Step-by-step explanation:
Fact:
.
In other words, , the difference of two squares in the form
and
, could be factorized into
.
In this question, the expression is the difference between two terms:
and
.
is the square of
. That is:
.
- On the other hand,
.
Hence:
.
Apply the fact that to factorize this expression. (In this case,
whereas
.)
.
Answer:
We call the denominator rational.
Step-by-step explanation:
For example:
It's clear that the denominator is now a rational number, not an irrational one anymore.