450
21 ft * 10 ft = 210 sq ft = 19.51 sq metres.
15ft x 20ft= 5yards x 20/3yards 100/3 sq yards =33.3333333333 sq yards
21 ft * 6 ft = 126 sq ft = 11.7 sq metres approx.
21-ft x 3-ft = 63 ft2
450
21 ft * 10 ft = 210 sq ft = 19.51 sq metres.
15ft x 20ft= 5yards x 20/3yards 100/3 sq yards =33.3333333333 sq yards
15 ft * 15 ft = 225 sq ft = 20.903184 sq metres15 ft * 15 ft = 225 sq ft = 20.903184 sq metres
22ft * 15ft = 330 sq ft = 30.658 sq metres
21 ft * 6 ft = 126 sq ft = 11.7 sq metres approx.
450 sq. ft.
21-ft x 3-ft = 63 ft2
length of the room times the width of the room. a 25'4" x15'6" room would be 392.666 sq foot, so just call it 394
To find the area of a rectangle, you multiply its length by its width. In this case, the length is 15 feet and the width is 16 feet. So, the area of the room would be 15 feet x 16 feet = 240 square feet.
multiply: 17 ft x 15 ft = 255 sq. ft.
Area = pi*11.52 = 415.4756284 or 415.48 square feet to two decimal places