Answer:
18
Step-by-step explanation:
I did my method that I was taught but if you do (-5) - (-2), you get 3. So you subtract 39 by the -21 to get 18.
<u>Answer:</u>
The volume of a pyramid is ![2406.16 cm^3](https://tex.z-dn.net/?f=2406.16%20cm%5E3)
<u>Explanation:</u>
We know that volume of a square based pyramid is given by the formula,
![\mathrm{V}=\mathrm{a}^{2} \frac{h}{3}](https://tex.z-dn.net/?f=%5Cmathrm%7BV%7D%3D%5Cmathrm%7Ba%7D%5E%7B2%7D%20%5Cfrac%7Bh%7D%7B3%7D)
where V = Volume
a = base length = 17.2cm (given)
And h = height of the pyramid = 24.4cm
So,
![V=17.2^{2} \frac{24.4}{3}](https://tex.z-dn.net/?f=V%3D17.2%5E%7B2%7D%20%5Cfrac%7B24.4%7D%7B3%7D)
=>
which is the volume of the given pyramid .
I think its 91.
NOT Guaranteed this is the Answer. Best of luck to you.
I believe that expression D is the one that is best
Answer:A=183cm^
Step-by-step explanation:
The area of square is :
Let s be side
A= s^2
144= s^2
Square both side
Therefore
s=sqrt(144)
s=12 cm
The perimeter of the square is : 4× s= 4×12= 48cm
So the perimeter of the square is equal to the circumference of the circle.
The equation will be:
4×s=2×pi×r
4×12=2× (22/7)×r
r=48/6.29
r=7.63
Area of a circle is:
A=pi× r^2
A= (22/7) × (7.63)^2
A=182.9674cm^2
A=183cm^