## anonymous one year ago help please!

1. anonymous

@rishavraj

2. Astrophysics

What's the question?

3. anonymous

im gonna post it now, give me a sec :)

4. anonymous

Kelly was building a bed for her dollhouse. She used her bed, which is 4 feet × 6 feet, as a guide. She scaled down the dimensions of her bed by a factor 1 over 5. What are the dimensions of the model bed she built? 0.8 foot × 1.2 feet 0.4 foot × 0.6 foot 0.08 foot × 0.12 foot 0.04 foot × 0.06 foot

5. anonymous

@rishavraj

6. Astrophysics

|dw:1438409758922:dw| just multiply the dimensions by 1/5.

7. Michele_Laino

hint: you have to multiply the dimensions of the bed of Kelly by a factor 1/5= 0.2

8. anonymous

so i do... 4 x 1.5 and 6 x 1.5?

9. Astrophysics

It's 1/5 not 1.5

10. Michele_Laino

hint: 4*(0.2)=... 6*(0.2)=...

11. anonymous

ok so i divide it 4 / 1/5 .. like that?

12. Michele_Laino

hint: 4*(1/5)=...? 6*(1/5)=...?

13. Astrophysics

$4 \times \frac{ 1 }{ 5 } = \frac{ 4 }{ 5 } ft$ do so similarly with the other, but you could also do it the way Michele has showed you $\frac{ 1 }{ 5 } = 0.2$ so you can do 4*(0.2) and 6*(0.2)

14. anonymous

oh ok :)

15. anonymous

i got 0.8 and 1.2

16. Astrophysics

Yeah

17. anonymous

ok yay!

18. anonymous

next question :)

19. anonymous

The seventh-grade class is building target areas for a PE activity. The bases for the game will be circular in shape. The diameter of each circle is 5 feet. Approximately how many square feet of the turf need to be painted for a base circle? Use 3.14 for π and round your answer to the nearest tenth. 15.7 square feet 19.6 square feet 42.8 square feet 78.6 square feet

20. Astrophysics

Ok so draw a diagram and label it first

21. anonymous

how

22. anonymous

@Astrophysics

23. anonymous

i got 9.4

24. anonymous

@Astrophysics

25. anonymous

Im thinking it's 6ft∗π it's 9.4 6ft*pi/2=9.42=9.4 @Astrophysics

26. Astrophysics

Where is the 6ft coming from? Do you really think that is true, check your answer choices, it's not even an option

27. anonymous

no i think the answer is 9.4

28. Astrophysics

You're just looking for the area of a circle $A = \pi r^2$ where r is the radius, which is half the diameter.