It depends on what size/kind of rock you want to use. Let's start with what I'll assume is the largest rock one would use in a rock garden - 3 to 5 in. River Rock: 1 Ton will cover about 80 sq. ft. if you want to make sure there are no "holes" 1 to 3 in. River Rock: 1 Ton will cover about 100 sq. ft. (no holes) 3/4 in. Rock: 1 Ton will cover about 150 sq. feet at 1.5" deep... & 120 sq. ft. at 2" deep 3/8 in. Rock - or crusher finds cover about the same as 3/4 in. Rock, but when using smaller rock, I like to cover at least 2" deep because there's more of a tendency for smaller rock to move around & settle, and you want to make sure you aren't looking at the weed barrier in half a year.
One ton of topsoil will cover approximately 200 square feet. The coverage area is dependent upon the thickness of the topsoil.
250
It depends on what kind of rock it is.
1 cubic yard of crushed rock fills 3/depth in feet square yards.
How many square feet will a ton of salt cover?
Tiles that are two feet on a side cover 4 square feet. 378 of them cover 1512 square feet.
A bundle of Shingles will cover roughly 33 square feet. A square of Shingles (3 Bundles) will cover 100 square feet.
9 square feet.
240
it will cover 3 cubic feet, or 9 feet, I am not sure how many square feet
190
400 Square Feet.
1,440 square feet or 160 square yards.