Multiply the number of square km by 10,763,910.416. In your example, 45 x 10,763,910.416 = 484,375,968.75 square feet.
Multiply the two together to give you square meters, and then convert the square meters in to square feet.
mulitiply 15 by 11.5 which is172.5 sq. ft.
There are five square yards in 45 square feet.
45 square meters = 484.375 square feet.
45 x 18 square feet
45 square meters is equal to 484.38 square feet.
45 kilometers/second (1 mile/1.609 kilometers)(5280 feet/1 mile) = 147,669 feet per second ===================
70 feet x 45 feet = 3150 square feet.
45 feet X 56 feet = 2520 square feet.
5 sq yards = 9*5 = 45 square feet.5 sq yards = 9*5 = 45 square feet.5 sq yards = 9*5 = 45 square feet.5 sq yards = 9*5 = 45 square feet.
45" x 45" = 14.0625 square feet.
A 45-foot diameter circle has an area of 1,590.4 square feet.