Question

above are two different models of a microchip.If the model of the microchip on the left measures 4 cm tall, how tall is the model of the microchip on the right?

Answer 1

ans: 8cm

1/2 = 0.5
1/4 = 0.25

0.5/0.25 = 2

4cm x 2 = 8cm

Answer 2

you can simple set up a proportion

0.5 0.25
__ = ____
x 4

so 2/.25 is 0.5 or 1/2