To find the area, move each semicircle to fill up the square, you'll see there are three squares, each with an area of 4*4=16, so the total area is 3*16=48 Now the perimeter: the perimeter of a circle is π times the diameter. perimeter of each semicircle: (1/2)π*4=2π there are altogether 6 arches and two straight sides, so the total is 2π*6+4*2=12π+8
the area is 48 square units, the perimeter is 12π+8 units.
The volume of a pyramid would be the base area times the height. Given the height and volume we can find the base ares by dividing the volume by the height.
