+709 On a map of California, 1 cm corresponds to 50 km. What is the ratio of the map's area to the actual area of california?
The areas of 2 circles are 36pi and 64pi . What is the ratio of the diameters? of the circumferences?
Help plz. I'm not good at ratios...
+129847 If 1cm = 50km......then, in area terms, [1cm]^2 = [50km]^2
36pi = radius = 6 diameter = 12
64 pi = radius = 8 diameter = 16
Ratio of smaller circle's diameter to larger circle's diameter = 12/16 = 3/4
Circumference ratio is exactly the same, too........3/4
To see why.....circumference of smaller circle = pi*12 .....circumference of larger circle = pi*16
So..... pi*12 / pi*16 = 12/16 = 3/4
+8581 On a map of California, 1 cm corresponds to 50 km. What is the ratio of the map's area to the actual area of california?
The areas of 2 circles are 36pi and 64pi . What is the ratio of the diameters? of the circumferences?
First: which formula do you wish to use??
+709 I really don't care which formula. I just need to know how to solve questions like these.
+129847 If 1cm = 50km......then, in area terms, [1cm]^2 = [50km]^2
36pi = radius = 6 diameter = 12
64 pi = radius = 8 diameter = 16
Ratio of smaller circle's diameter to larger circle's diameter = 12/16 = 3/4
Circumference ratio is exactly the same, too........3/4
To see why.....circumference of smaller circle = pi*12 .....circumference of larger circle = pi*16
So..... pi*12 / pi*16 = 12/16 = 3/4
