Plz do this question if you did I will very appreciated you. plz.
1 answer:
The area formula of a circle is × π.
With that being said, we can solve both problems!
Starting with part A:
-The radius we know is 21cm. From there, we can substitute in our formula with the new value.
x π
From there, we can square our radius:
(21 x 21) x π
(441) x π
And finally, we can multiply by pi to get our answer.
(441) x π
1385.44236023
Which rounded to the nearest tenth is 1385.4. Therefore, the area of the porthole is 1385.4 centimetres.
The second part can be followed with the same process, hopefully you understand the concept enough to where you're comfortable solving problems like this on your own. Feel free to reach out if you have any further trouble!
<em>Hope this helped! :)</em>
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Answer:
There are none.
Step-by-step explanation:
<u>No calculus involved:</u>
The line, in slope-intercept form, has equation , ie is always decreasing (easy to spot applying the definition)
Meanwhile, is always increasing over its domain.
At no point the tangent will be decreasing.
<u>Let's use calculus</u>
We are to solve the equation which has no real solutions.
Answer:
The value of x for the given expression is 5 .
Step-by-step explanation:
Given expression as
+
=
Now, arrange the equation
So, =
-
<u>Taking L.C.M on right hand side </u>
Or, =
Or, =
Or, x =
∴ x = 5
So, The value of x = 5
Hence,The value of x for the given expression is 5 . Answer