68*225 = 15300 square feet
The answer will depend on the units used for 6X9. It also depends on the shape of the 225 square foot area: a circular area will require a lot more stones to be shaped and, therefore, a lot more wastage.
Multiply length x width; 40 x 145 = 5,800 square feet.
6,650 square feet is 0.15 acres.
0 because there are only inches and centimeters in a foot
There are 43,560 square feet in an acre. This becomes .0229 of an acre.
7,000 square feet is 0.16 acre or 4/25 of an acre.
An 18,898 square foot lot is about 0.43 acre.
21 x 4 = 84 -- There are 84 square feet on the floor. -- There are 84 square feet on the ceiling. -- There are a lot more square feet on the walls, but in order to calculate them, you need to know the height of the room.
21 x 11 = 231 -- There are 231 square feet on the floor. -- There are 231 square feet on the ceiling. -- There are a lot more square feet on the walls, but in order to calculate them, you need to know the height of the room.
27,300
This lot is slightly over 1/2 (0.5165) acre.
It depends on how long the ruler is, but most rulers are 12 inches and 12 inches=1 foot...so the answer would be 4 rulers for 4 feet...thats a lot of fours :) I am presuming you are using 12inch rulers so as there are 12inches in a foot you will need 4 rulers