153.94 square cm
7cm; the diameter of a circle is twice its radius.
Surface area = 4*pi*r2 = 615.8 cm2
When you try to figure out an area of a circle, you square the radius, then multiply it by pi to get the area of a circle. A radius square is radius x radius, or radius squared.
A circle with a radius of 4 cm has an area of 50.27 square cm.
The circumference of a circle with a 7cm radius is 44cm. The area is 154cm2
153.94 square cm
r=square root of 7/^
98 cm^2
7cm; the diameter of a circle is twice its radius.
The radius is 7cm
1.7
3.5 cm
circumference of a circle = 2*pi*radius or diameter*pi
A cone with a slant height of 22cm and radius of 7cm has a total surface area of about 637.74cm2
A cylinder with a 7cm radius and 3cm height has a total surface area of about 439.82cm2
A = 38.485 cm2