Answer:
18 cm
Explanation:
A triangle has a base of 7.2 centimeters and height of 10.24 centimeters. A large triangle has a base of question mark centimeters and a height of 25.6 centimeters.
The diagram represents the process of creating a scale drawing from an original using a scale factor of 0.4. The base of the original drawing must be:
17.6 cm
18 cm
33.5 cm
45 cm
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1st solution (using an equation)
10.24 : 7.2 = 25.6 : x
x = 7.2 * 25.6 : 10.24
x = 18cm
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2nd solution (using the scale factor)
7.2 : 0.4 =
18 cm