If the area is a rectangle then the perimeter in feet is: 2.5+7+2.5+7 = 19 feet, since 84 inches is the same as 7 feet.
Assuming the measure is of floorspace of a rectangular room, the area of the room is 84 x 30 = 2520 square feet.
A 2-foot border around a 20 x 14 area makes the area 24 x 18 making the perimeter 84 feet.
If there's a two foot border around a 14 x 20 foot area, that makes it 18 x 24 feet, with a perimeter of 84 feet.
If you're asking about a square with side length 21, the perimeter is 4 x 21 = 84 and the area is 212 = 441.
A perimeter IS a linear measure so a perimeter of 84 feet is a length of 84 feet.
84 feet... 2 x (18+24)
If the area is a rectangle then the perimeter in feet is: 2.5+7+2.5+7 = 19 feet, since 84 inches is the same as 7 feet.
The perimeter doesn't tell the area. There are an infinite number ofpossibilities, and it can be any number less than 561.5 square feet.
Assuming the measure is of floorspace of a rectangular room, the area of the room is 84 x 30 = 2520 square feet.
Area is length times width. So a 12 by 7 room has an area of 84 feet2.
If the perimeter is 84 feet and the length is twice the width, then the length will be 28 feet and the width will be 14 feet.
Perimeter of which geometry (square, circle, rectangle, triangle, ...)
A 2-foot border around a 20 x 14 area makes the area 24 x 18 making the perimeter 84 feet.
84
If there's a two foot border around a 14 x 20 foot area, that makes it 18 x 24 feet, with a perimeter of 84 feet.
14 feet (14+14+28+28 = 84)