Answer:
Johnny is wrong.
Explanation:
To compare two quantities, they must both be written in the same units. In this case, both must be in centimeters or millimeters. So, we must convert 600cm to millimeters or vice versa.
If we choose to use milimeters, we have
600cm=600cm
![(10mm)/(1cm)](https://img.qammunity.org/2021/formulas/mathematics/high-school/vk0rmgvkx68pbst83h0r04l2y2h1g1yfew.png)
600cm = (600)(10) mm
600cm = 6000 mm
Now, we must compare 6000 mm with 5642 mm. We can see that 6000mm is greater than 5642 mm. hence, it is enough moulding for the baseboards.
In fact, 6000-5642 mm =358 mm would remain.