Please help me! Will give medal :)
Beni's uncle is building a deck for her house that is proportional to the 20-feet by 30-feet deck he built for his house. The scale factor between his deck and her deck is 0.5. Which of the following could be a measurement for Beni's deck?

A)15 feet
B)20 feet
C)30 feet
D)50 feet

Question

Please help me! Will give medal :)
Beni's uncle is building a deck for her house that is proportional to the 20-feet by 30-feet deck he built for his house. The scale factor between his deck and her deck is 0.5. Which of the following could be a measurement for Beni's deck?

A)15 feet
B)20 feet
C)30 feet
D)50 feet

anonymous · Answer

helpie :)

johnweldon1993 · Answer

So the deck he has is 20 by 30

The deck she wants will be that by a scale factor of .5

This means it will be HALF of what he has in each measurement...

so he has a 20 by 30

she will have a  20               30
                      ---      by    ----       deck
                        2                 2

so 10 by 15

anonymous · Answer

$$10\times15=150$$

hoblos · Answer

you need the linear measurement for Beni's deck which is the perimeter of the deck

and the perimeter is the sum of the sides|dw:1396630796250:dw|