Answer:
Step-by-step explanation:
First find circumference of circle: C=2
r = 18.84
Rectangle area = 18X13 = 244.92
Area of circles is (pi)r^2 = 28.6
244.92+28.6+28.6 = 302
Answer:
C
Step-by-step explanation:
I didn't use your formula bc I do not understand it =). I just did 975 divided by 780. When you do this you will get 125. This means that 975 is 125% of 780. So it has to be 25% more than 780. You can see that 780 divided by 4 (25 times 4 is 100 so 25 % is one fourth) is 195. Then 780 plus 195 is 975.
Hope this helped you!
The formula of a volume of a cone:
![V=\dfrac{1}{3}Bh[/rex]B - area of a baseh - heightWe have[tex]V=90\ cm^3,\ B=18\ cm^2](https://tex.z-dn.net/?f=V%3D%5Cdfrac%7B1%7D%7B3%7DBh%5B%2Frex%5D%3C%2Fp%3E%3Cp%3EB%20-%20area%20of%20a%20base%3C%2Fp%3E%3Cp%3Eh%20-%20height%3C%2Fp%3E%3Cp%3EWe%20have%3C%2Fp%3E%3Cp%3E%5Btex%5DV%3D90%5C%20cm%5E3%2C%5C%20B%3D18%5C%20cm%5E2)
Substitute:
![90=\dfrac{1}{3}\cdot18\cdot h\\\\90=6h\qquad|\text{divide both sides by 6}\\\\15=h\to h=15](https://tex.z-dn.net/?f=90%3D%5Cdfrac%7B1%7D%7B3%7D%5Ccdot18%5Ccdot%20h%5C%5C%5C%5C90%3D6h%5Cqquad%7C%5Ctext%7Bdivide%20both%20sides%20by%206%7D%5C%5C%5C%5C15%3Dh%5Cto%20h%3D15)
<h3>Answer: 15 cm.</h3>
Answer:
I think it's b because it's a reccouring number
Step-by-step explanation:
This is my working out, I used the balance method
Here, We will determine the sides first of all
We are assuming that 1 block measures 1cm. So, According to this assumption the number of blocks the side covers is equal to the length of that side (in cm)
![\rule{300pt}{3pt}](https://tex.z-dn.net/?f=%5Crule%7B300pt%7D%7B3pt%7D)
The sides are; 2cm, 4cm, 2cm, 4cm, 7cm, 3cm
<h3>Now,</h3>
![\sf \longmapsto perimeter = Sum \: of \: all \: sides](https://tex.z-dn.net/?f=%20%5Csf%20%5Clongmapsto%20perimeter%20%3D%20Sum%20%5C%3A%20of%20%5C%3A%20all%20%5C%3A%20sides)
<h3>Putting values of sides;</h3>
![\sf \longmapsto 2 + 4 + 2 + 4 + 7 + 3](https://tex.z-dn.net/?f=%20%5Csf%20%5Clongmapsto%202%20%2B%204%20%2B%202%20%2B%204%20%2B%207%20%2B%203)
![\sf \longmapsto Perimeter=22cm](https://tex.z-dn.net/?f=%20%5Csf%20%5Clongmapsto%20Perimeter%3D22cm)