Question

16.Find the the surface area of sphere having radius 4 cm?. Single choice.
(1 Point)
200.96 cm²
267.95 cm²
200 cm²​

Answer 1

Answer:

200.96 cm² is the surface area of sphere.

Explanation

$\\ \circ \: {\boxed{\tt\large\gray{ Surface \ Area _{(Sphere)} = 4πr^2 }}}$

• π = 22/7 or 3.14
• r = Radius

Putting values,

$\colon\implies {\tt{ Surface \ Area _{(Sphere)} = 4πr^2 }} \\ \\ \\ \colon\implies {\tt{ Surface \ Area _{(Sphere)} = 4 \times 3.14 \times 4 \times 4 }} \\ \\ \\ \colon\implies {\tt{ Surface \ Area _{(Sphere)} = 200.96 \ cm^2 }}$

Hence,

• The Surface Area of the sphere is 200.96 cm² .

Therefore;

A) Option is correct !!

More to Know:

• $\\ \circ \: {\boxed{\tt\red{ Volume _{(Sphere)} = \dfrac{4}{3}πr^3 }}}$

• $\circ \: {\boxed{\tt\red{ Curved \ Surface \ Area _{(Sphere)} = 4πr^2 }}}$

Sphere

• It is perfectly symmetrical.
• It has no edges or vertices (corners).
• It has one surface
• It is not a polyhedron
• All points on the surface are the same distance "r" from the center.