1.27 inches
To find diameter (width of a circle):
C = 3.14159 (pi) * diameter
4 = 3.14159 * d
d= 1.27 inches
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If the radius is 4, the width is 8 inches. If it is a 4 inch circle diametrically the width is 4 inches
The formula for circumference of a circle is 2πr. Since the radius is 4, the circumference is 8π or approximately 25.12 inches.
Length 7 inches and width 4 inches because 7*4 = 28 square inches
It is 4/pi = 1.3 inches, approx.
Length of rectangle is 5 inches and its width is 4 inches Check: 2*(5+4) = 18 inches which is its perimeter