Use "approximate size" in a sentence

1. What is the approximate size of this room?

2. All we need is a dummy Of the approximate size and weight of Annie.

3. 1 Chrysoprase 6 x 9mm Pear Gemstone Cabochon (N) Approximate Size 5.9 x 8.9mm to 6.25 x 9.2mm

4. 0 review(s) 1 Chrysoprase 7 x 10mm High Dome Pear Shape Gemstone Cabochon (N) Approximate Size 6.9 x 9.9mm to 7.2 x 10.2mm