When a bar graph is drawn to the scale 1 cm = 20 units, the value represented by a rectangle of height 4.7 cm is:

Correct option is C

Given:

The scale is 1 cm = 20 units.
Height of the rectangle = 4.7 cm.
Solution:
To find the value represented by the height of the rectangle, we multiply the height by the units per cm:
Value = Height of rectangle × Units per cm
Value = 4.7 cm × 20 units/cm = 94 units.
Therefore, the value represented by the rectangle of height 4.7 cm is 94 units.