kyracoast5
kyracoast5
02-05-2018
Mathematics
contestada
can i have some help on these two problems
Respuesta :
upandover
upandover
02-05-2018
Hi there!
In order to find the shaded area, we'll need to find the area of the larger circle and subtract the area of the smaller circle from it.
WORK:
A = pi x 36 (larger)
A = 36pi
A = pi x 16 (smaller)
A = 16pi
36pi - 16pi = 20pi or 62.8cm^2
When a radius is doubled, the entire area is quadrupled. This is because the radius is squared.
Hope this helps!! :)
If there's anything else that I can help you with, please let me know!
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