Please help with this

Find the area of the shaded regions.

The area of the shaded region is 7π square centimeters.

Step-by-step explanation:

Note that Circle B has a radius of 3 cm, and the two smaller circles, Circles O and C, both have a radius of 1 cm.

The area of a circle is given by:

Therefore, the area of Circle B, the entire circle, is:

The area of Circle O is:

And likewise, the area of Circle C is:

The area of the shaded area is the area of the Circle B subtracted by the area of Circles O and C. Hence:

Substitute and evaluate:

The area of the shaded region is 7π square centimeters.

13

step-by-step explanation:

169-1=168

168-3=165

165-5=160

160-7=153

153-9=144

144-11=133

133-13=120

120-15=105

105-17=88

88-19=69

69-21=48

48-23=25

25-25=0

since it took 13times to completely subtract it hence its square root is 13

i think it is c, not positive though

step-by-step explanation: