find areas
a=pir^2
d/2=r
2/2=1
pi1^2
pi1
pi
0.10:pi is ration
other cokie
8indiameter
8/2=4
pi4^2
pi16
0.10:pi=x:16pi
obvously mltply 0.10 by 16
1.6
answer is C
squaer pyramid
surfacea rea
made of 1 bottom square and 4 side triangles
areatriangle=1/2bh
b=10
12=h
A=1/2*10*12=60
then times 4 since 4 triangles
60*4=240
areasquare=b^2=10^2=100
100+240=340
answer is A
