Mathematics: A designer builders a model of a bicycle the finished model is exactly the same as the original but smaller. The scale factor is 2:15 (A) ratio of height ☑️:☑️ (B)surface area ☑️:☑️ (C)volume ☑️:☑️

A designer builders a model of a bicycle the finished

gyexisromero10

23.04.2021

a) The ratio of height is 2:15

b) The ratio of surface area is 4:225

c) The ratio of volume is 8:3375

Step-by-step explanation:

The scale factor of model to original is 2 :15

Please remember the concept, when scale factor is a:b

Then ratio of sides would be same a:b

The ratio of surface area is $a^{2} :b^{2}$

The volume is $a^{3} :b^{3}$

According to the concept,

The ratio of height is 2:15

The ratio of surface area is $2^{2} :15^{2}$ =4:225

The ratio of volume is $2^{3} :15^{3}$ =8 :3375.

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tayshawngooch

17.09.2020

For Store A:

Number tasters = 258

Number preferring local brand = 167

Proportion = 167/258 = 0.6472

Therefore, the proportion based on preference in store A is 0.6472. Do the same for the other two stores.

Step-by-step explanation:

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