Question

A mark on the surface of a glass sphere is viewed from a diametrically opposite position. It appears to be at a distance 10 cm from its actual position. The radius of the sphere is

Answer 1

Answer:

5 cm

Step-by-step explanation:

Since the mark is diametrically opposite it means that the diameter is 10cm.

Thus the radius of the sphere is half the diameter or 5cm.

Answer 2

Answer:

The radius of the sphere is 5cm.

Given:

A mark on the surface of a glass sphere is viewed from a diametrically opposite position. It appears to be at a distance 10 cm from its actual position.

To find:

The radius of the sphere  

Solution:

The mark is diametrically opposite, given its length is 10 cm.

Therefore, the radius of the sphere is half the diameter of,

$\frac{10}{2}$= 5 cm

Result:

The radius of the sphere is 5cm.