Appearently is 215 sf what ever that means :)
Nothing
It has a perimeter of 12 units, an area of 7 (6.9282) square units and an altitude of 3.5 (3.4641) units.
4x3?
If the area of a square is 12 the perimeter is: 13.86
The area of a square with a perimeter of 12 feet is: 9 square feet.
The perimeter and area of a shape do not provide sufficient information. With a given perimeter, the largest area that you can enclose is a circle, but you can then flatten the circle to reduce its area. Similarly, in terms a of quadrilaterals, a square has the largest area, but it can be flexed into a rhombus whose area can be made as small as you like. All that can be said is that there is no shape with a perimeter of 12 units whose area is 12 square units.
The area of a hexagon with a perimeter of 12 units is about 10.4 units2
a square
Perimeter = 12 units means side = 12/4 = 3 units. So area = 3*3 = 9 square units.
A rectangle with sides of 3 and 4 units will meet the requirements.
215 sf
It is: 4*12 = a perimeter of 48 units
If it's a rectangle then:- Area = 15*12 = 180 square units Perimeter = 15+15+12+12 = 54 units of measurement
Perimeter = 10 + 10 + 12 = 32 units. Area = 48 square units
A 3-4-5 triangle or a rectangle that is 1.268 units * 4.732 units (to 3 dp) are two possible answers.
Nothing
A rectangle with length 5 and width 1 would satisfy those conditions. The area is 5*1=5. The perimeter is 5+1+5+1=5+5+1+1=2(5)+2(1)=10+2=12.