Answer:
50 meters
Step-by-step explanation:
the diameter is just Rx2 (R being the radius)
and the radius is D divided by 2 (D is the diameter)
Answer:
ratio of boys to girls= 4:7
number of girls=21
now,
![\frac{boys}{girls} \times \frac{no.of \: boys}{no.of \: girs}](https://tex.z-dn.net/?f=%20%5Cfrac%7Bboys%7D%7Bgirls%7D%20%20%5Ctimes%20%5Cfrac%7Bno.of%20%20%5C%3A%20boys%7D%7Bno.of%20%5C%3A%20girs%7D%20)
![\frac{4}{7} \times \frac{boys}{21}](https://tex.z-dn.net/?f=%20%5Cfrac%7B4%7D%7B7%7D%20%20%5Ctimes%20%20%5Cfrac%7Bboys%7D%7B21%7D%20)
![4 \times 21 = 7boys\: \\ \: ({cross multiplication})](https://tex.z-dn.net/?f=4%20%5Ctimes%2021%20%3D%207boys%5C%3A%20%5C%5C%20%20%20%5C%3A%20%20%28%7Bcross%20multiplication%7D%29)
![84 = 7boys](https://tex.z-dn.net/?f=84%20%20%3D%207boys)
![\frac{84}{7 \: } = boys \: \: \: (dividing \: 84 \: by \: 7)](https://tex.z-dn.net/?f=%20%5Cfrac%7B84%7D%7B7%20%5C%3A%20%7D%20%20%3D%20boys%20%5C%3A%20%20%5C%3A%20%20%5C%3A%20%28dividing%20%5C%3A%2084%20%5C%3A%20by%20%5C%3A%207%29)
![12 = boys](https://tex.z-dn.net/?f=12%20%3D%20boys)
![no.of \: boys = 12](https://tex.z-dn.net/?f=no.of%20%5C%3A%20boys%20%3D%2012)
Answer:
3
Step-by-step explanation:
Idkidkidkidkidkidkidkidkidkdidkidkidkidkidkidkidkidkidkidkidkidk