20 multiplied by 40 is 800.
Area of deck = (20+2d)x(40+2d)-(20x40) Area of deck = (20x40)+40d+80d+4d2 -(20x40) Area of deck = 120d+4d2
Close to 24,000 gal if it is rectangular.
To determine the amount of hardwood flooring needed for a 20x40 room, first calculate the area by multiplying the length and width: 20 feet x 40 feet = 800 square feet. It's advisable to add an extra 10% for waste and cuts, bringing the total to approximately 880 square feet. Therefore, you will need about 880 square feet of hardwood flooring for the room.
To calculate the volume of a 20x40 lazy L pool, you'll first need the average depth. Assuming an average depth of 5 feet, the formula for volume in gallons is: length × width × average depth × 7.48 (gallons per cubic foot). Therefore, for a 20x40 pool with a 5-foot average depth, the volume would be approximately 29,976 gallons (20 × 40 × 5 × 7.48). Adjust the depth accordingly for a more accurate estimate.
Cross multiply then divide, 20*8 divided by 40= 40 gallons
If the figures represent lengths measured in feet then, 20 x 40 = 800 sq feet
5200 cubic feet
about 5 min. if it's only 1" deep, depending on water pressure.
using epoxy paint to do a concrete floor need to know how much square feet it is how do i calculate the square footage?
To find the area of a rectangle, you multiply the length by the width. In this case, the length is 40 feet and the width is 20 feet. So, 40 feet x 20 feet = 800 square feet. Therefore, a 20x40 foot rectangle has an area of 800 square feet.
0.175
Assuming 20 feet by 40 feet, 20x40x4 = 3200 cu ft = 3200/27 = 120 yards = 320,000 pounds