Question

A running track in the shape of an oval is shown. The ends of the track form semicircles.

A running track is shown. The left and right edges of the track are identical curves. The top and bottom edges of the track are straight lines. The track has width 54 m and length of one straight edge 120 m.

What is the perimeter of the inside of the track? (π = 3.14)

409.56 m

480.00 m

579.12 m

616.80 m

Answer 1

@Mehek14 @freckles @sammixboo @Zarkon @agent0smith @sleepyjess @AloneS @ShadowLegendX @just_one_last_goodbye @inkyvoyd @sweetburger @Ms-Brains

Answer 2

so than you see this posted image there is the length of diameter of this semicircle equal 54 m so how many will be the length of the radius of this semicircle ?

Answer 3

are you here please ?

Answer 4

2,700?

Answer 5

do you know that the diameter is 54 and that the diameter is equal 2r
so than r = ?

Answer 6

ooo sorry I thought this was a different question

Answer 7

120?

Answer 8

so how many will be the length of radius ?

Answer 9

54 divide 2

Answer 10

27

Answer 11

@jhonyy9

Answer 12

right 27 so than you know that 27 is the length of the radius do you know formula of circumference of a circle ?

Answer 13

c+2pie r @jhonyy9

Answer 14

C = 2pir

so than you look on this posted image on the left and right part so there are two semicircle with equal radius - so than you unit togheter these two semicircle will get a circle with radius equal 27 - yes ?

Answer 15

kathy !!!

Answer 16

@jhonyy9 sorry my sister was asking my something. and yes

Answer 17

so than you calculi the circumference of this circle so will get the length of these two semicircle from the ends of this track

Answer 18

okay

Answer 19

C = 2pir

C = 2*3,14 *27 = ?

Answer 20

hey ! you dont calculi it now ?

Answer 21

409.56?

Answer 22

this is to much - i think - check it please

Answer 23

no I mean as the final answer. but I know 14*27=378

Answer 24

how you get thie 14*27 ?

Answer 25

multiply?

Answer 26

first you need to calculi the circumference of this two semicircle

Answer 27

but i wrote there above that this circumference of these semicircle is equal with circumference of a circle with radius equal 27 - ok ? so please calculi this circumference

Answer 28

what is calculi?

Answer 29

make the calculi for circumference

Answer 30

C = 2pir

C = 2*3,14*27 = ?

Answer 31

make calculations

Answer 32

C = ?

Answer 33

I don't know how

Answer 34

it's my first time answering these questions

Answer 35

multiplie 2*3,14*27 = ?

Answer 36

2*27=54

54*3,14 = 169,56

Answer 37

then what's the answer?

Answer 38

so this the length of this two ends part in the form of semicircle
so to find the total length of this track you need assuming to this number the length of these two edge with length of 120 meter - ok. ?

Answer 39

one edge has 120 meter so 2 edge will be how many meters length ?

Answer 40

okay

Answer 41

so how many ?

Answer 42

2*120 = ?

Answer 43

420

Answer 44

why so much ?

Answer 45

120+120 = ?

Answer 46

240

Answer 47

yes

so the total length of this track will be the circumference of this circle assumed with this above get length of these two edge

how many will be ?

Answer 48

169,56 +240 = ?

Answer 49

409.56?

Answer 50

nice

exactly

Answer 51

thank you ahaha sorry for being so slow XD

Answer 52

do you understand it now how you can solving same exercices ?

Answer 53

np

was my pleasure

and anytime just tag me

good luck

bye bye