Some of those are already answered in other questions. Rodents home: Mouse house, rat flat Blinding illumination: bright light Tired walkers: ? Light whiskers: ? Larger shop: ?
Yes. If equals are added to equals, then the results of the additions are equal.
a square
A rectangle
equals D repeater
Volume = length * width * height = 10cm * 5cm * 2 cm = 100 cm3 Density = mass/volume = 300g/100cm3 = 3 grams per cm3.