Question

The ratio of the size of the television screen (in cm) to the distance a person should sit from it (in cm) is 1:6. How far away should a person sit from a 42 cm television?

a) 7 cm

b) 42 cm

c) 252 cm

d) 252 cm

Answer 1

The ratio of the size of the television screen to the distance a person should sit from it is 1:6. To find the distance a person should sit from a 42 cm television, set up a proportion and solve for the unknown. The person should sit 252 cm away from the television.

Step-by-step explanation:

The ratio of the size of the television screen to the distance a person should sit from it is given as 1:6. We are asked to find the distance a person should sit from a 42 cm television. Let's set up a proportion:

Screen size / Distance to sit = 1 / 6

Plugging in the values, we get:

42 cm / Distance to sit = 1 / 6

Cross multiplying, we have:

42 cm * 6 = Distance to sit * 1

Simplifying, we find:

Distance to sit = 252 cm

Therefore, a person should sit 252 cm away from a 42 cm television.