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>
(x1, y1) (x2, y2)
(-4, 5) (-1, 1)
x2-x1
-1 - -4
-1+4
3
y2-y1
1- -4
1+4
5
answer : (3,5)
I believe this is right, hope this helps!
Answer:
22/7
Step-by-step explanation:
Diameter is 2m
we know,
radius= Diameter/2
r = d/2
r = 2/2
r = 1
Now,
area of circle= πr^2
22/7 * 1^2
22/7 ....... answer
Answer:
the worth of the house today is $392,000
Step-by-step explanation:
in 1995 --------- $200,000
and its appreciates by 4% yearly
so by 2019 the house will be
firstly we subtract 2019 from 1995 to know how many years the house has appreciated for
2019 - 1995 = 24years
therefore to get the total % the house has appreciated for we multiply the year by 4%
24 * 4% = 96%
so to get the appreciated value we multiply 96% by the initial amount of the house
96% * $200,000 = $192,000
therefore the worth of the house at present will be the initial amount plus the appreciated value
$200,000 + $192,000 = $392,000
Answer:
Draught-fission1 hfhhdhbxbbd
