Question

The city is planning to add a jogging track to a neighborhood park. The figure below is a scale drawing of the jogging track. It's scale is 1/2 inch=15 feet. The height of this scale drawing is 2.5 in. and the width is 1 inch. What is the area inside the actual jogging track? Use 22/7 for pie.

(Part B): How long is the jogging track? Use 3.14 for pie.

Answer 1

Picture.

Answer 2

@jigglypuff314 please help my friend with this question

Answer 3

the straight side of the track = 2.5in in the picture
to convert it to ft
2.5 * (15/0.5) = 75
so that side of the actual track is 75 feet

same thing with the 1inch part
1 * (15/0.5) = 30

so you have a 75 by 30ft rectangle in the middle
so you see where I'm getting these numbers? :)

Answer 4

YEP she knows

Answer 5

lol i told her to ask this question for me. thts y she left

Answer 6

please keep explaining @jigglypuff314

Answer 7

Oh sorry. Yes I realize that part. I'm just a bit confused as to where pi comes in to the problem.

Answer 8

2 half circles = 1 whole circle
the 1inch thing is the circle's diameter
radius = 1/2 diameter = 0.5 inch
0.5 * (15/0.5) = 15
so radius of the circle is 15 ft

area of rectangle = (length) * (width)
and area of circle = (3.14) * (radius) * (radius)

Answer 9

Thank you!

Answer 10

what do we do after that?

Answer 11

we just add both answers?

Answer 12

mhmm

Answer 13

thank you so much! ^.^ ur da best

Answer 14

how long is 75 + 30ft

Answer 15

105 ft.

Answer 16

yeah that 105 is for part b

Answer 17

Oh! Yeah I get it. Thank you!

Answer 18

glad I could help :)

Answer 19

but we were supposed to use pi for part b

Answer 20

@jigglypuff314

Answer 21

@jigglypuff314 i got 2250.79 for part a
fr prt b i dunno how to finish it

Answer 22

ohhhh I just realized what part b was asking
ummm
the 75 + 75 for the straight line part

and circumference = (diameter) * (3.14) = (30ft) * (3.14)

Answer 23

and for part A I got something different
try
(75 * 30) + (3.14 * 15 * 15) = part A

(75 + 75) + (3.14 * 30) = part B

Answer 24

i got 506,956.5 fr part a and 4594.2 fr part b

Answer 25

omg try again

Answer 26

kk haha calculator wrong

Answer 27

i got 2956.5 fr part a and 5719.2 fr part b :)

Answer 28

A is correct
now try part b again

Answer 29

oh shoot i mutiplied instead of added for b

Answer 30

244.2

Answer 31

good

Answer 32

thats it right?

Answer 33

it's what I got

Answer 34

than you so much