Find the square root of 1989 by repeated subtraction​

Step-by-step explanation:

225−1=224

224−3=221

221−5=216

216−7=209

209−9=200

200−11=189

189−13=176

176−15=161

161−17=144

144−19=125

125−21=104

104−23=81

81−25=56

56−27=29

29−29=0

Totalstepsof=15

hence225=15

then, the surface area of the sphere shown in the image is: 256π sq. units!

step-by-step explanation:

the lateral surface area of a sphere is 2πrh where h=2r.

then:

surface area = 4πr^2.

in this case, r=8 units ⇒ surface area = 4π(8 units)^2. = 256π sq. units!

then, the surface area of the sphere shown in the image is: 256π sq. units!

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step-by-step explanation: