The answer is D 6.32 S= the slant Height Then we need to get the apothem of the lower and upper base S^2 = (apothem of the lower base - apothem of the upper base)^2 + (height)^2 and they would be like this: apothem of the lower base = 8 / 2*tan(90/2) = 4 apothem of the upper base = 4 / 2*tan(90/2) = 2 S^2 = (4 - 2)^2 + (6)^2 S^2 = 2^2 + 6^2 S^2 = 4 + 36 S^2 = 40 <span>S = 6.32 </span>
We can subtract from the number of strings of length 4 of lower case letters the number of string of length 4 of lower case letters other than x. Thus the answer is 264 − 254 = 66,<span>351</span>
