Find the volume of the shaded solid 10cm by 10cm by 10cm

So from other comments
circle inscribed in a square

squaer is 10 by 10

shaded area is inside square but not circle

so

area of square=side^2
area of circle=pir^2
d/2=r

10/2=5=r

area of square-area of circle=shaded
10^2=100
pi5^2= aprox 78.5398
100-78.5398=21.4602

shaded=21.4602 cm^2

First step is to get rid of the square root. remember that a square root is the same as raising to the (1/2) power. see below: multiply exponents per exponent rules to get: remember you subtract exponents from the denominator and add exponents in the numerator so: simplify further: so a is the correct choice. if you don't understand this google exponent rules and it will you understand. look at the image results.