Answer:
Radius, r = 26.57 cm and diameter = 53.14 cm
Step-by-step explanation:
Given that,
The circumference of a coin, C = 167 cm
We need to find the radius and the diameter of the coin.
The formula for the circumference of a circle is given by :
![C=2\pi r](https://tex.z-dn.net/?f=C%3D2%5Cpi%20r)
Where
r is radius of coin
![r=\dfrac{C}{2\pi}\\\\r=\dfrac{167}{2\pi}\\\\r=26.57\ cm](https://tex.z-dn.net/?f=r%3D%5Cdfrac%7BC%7D%7B2%5Cpi%7D%5C%5C%5C%5Cr%3D%5Cdfrac%7B167%7D%7B2%5Cpi%7D%5C%5C%5C%5Cr%3D26.57%5C%20cm)
Diameter, d = 2r
d = 2(26.57) cm
= 53.14 cm
Hence, this is the required solution.
Answer:
20
Step-by-step explanation:
Scale factor = 8/16 = 1/2
So, 10/x = 1/2
x = 10*2
x = 20
A.) Let x be the number of swimming lessons she had, then
402 - 15x = 237
b.) 15x = 402 - 237 = 165
x = 165/15 = 11
She had 11 swimming lessons
c.) Let the number of lesson she had be y, then 19y = 237
y = 237/19 = 12 lessons
She can pay for 12 lessons with her remaining $237.
Answer: 8.99mm
Step-by-step explanation:
a^2 + b^2 = c^2