Question

i have to find the area of the shaded figure outer circle is 150mm and inner circle 80mm what is the area if the shaded in mm squared

Answer 1

What do you men, exactly? The diameters are 150 and 80 mm? And the shaded area is between the two circles?

Answer 2

yes

Answer 3

Therefore, the shaded area would be the area of the larger circle minus the area of the smaller circle. The radii of the circles, respectively, are 75 and 40 mm, so their areas are, respectively, 5625pi and 1600pi. Subtracting them, you have

5625pi-1600pi= 4025pi

Answer 4

it wants it in mm squared so how do i get 4025 pi in to mm squared

Answer 5

you just put mm squared on as a unit. It's already in mm squared, so the answer is 4025pi mm^2

Answer 6

how about this one angle EFG and GFH are a linear pair, m angle EFG=3n+21, and m angle GFH + 5n+39. whar are m angle EFG and m angle GFH

Answer 7

Since they are a linear pair, the sum of EFG and GFH is 180. so:

3n+21+5n+39=180
8n+60=180
8n=120

so n=15

Answer 8

Therefore, angle EFG= 45+21 = 66
angle GFH = 75+39 = 114