"They kept on talking and kept on ooohing and aahing and Grandma Sands kept on interrupting breakfast..." (p 166) is an example of... * 5 points
personification
allusion
metaphor
onomatopoeia

It would be 18 cm

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.