Question

Help me? Can't figure it out

Answer 1

Pi = 3. Area of a circle = pi×r squared.

R is radius, and the radius of that circle is 11 m. therefore, 3.14×11 squared will give you your answer. Don't forget, exponent before multiplication

11^2 = 121
121×3 = 363 That's the area of the big circle.

Now, 11÷2 gives you the radius of the small circles. you get 4.5
4.5^2 = 20.25
20.25*3 = 60.75

That's the area of ONE small circle. double it and you have the area of 2.

60.75×2= 121.5

Now just subtract the area of the small ones from the area of the big one to find the area of the shaded region.

363-121.5= 241.5

Now, you're done!