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 legs of a triangle with a hypotenuse that measures 15 units long have lengths that are equal to 15 times the sine or cosine of the given angle. leg 1 = (15 units) x (cos 19) = 14.18 units leg 2 = (15 units) x (sin 19) = 4.88 units The lengths of the legs are 14.18 units and 4.88 units.
