There are only 2 perfect cubes in between 1000 and 2000.
11^3 = 1331
12^3 = 1728
Last one:
In the picture a=2, b=4a, b=4•2=8
1st picture a=3, b=4a, b=4•3=12
2nd picture a=0.5, b=4•0.5=2
3rd picture a=2.5, b=4•2.5=10
4th picture a=4, b=4•4=16, but in the picture b=10 therefore, this rectangular is NOT similar to rectangular ABCD.
Answer is B
collinear: lying on the same straight line
