Question

Glen is looking into buying a piece of land. He estimates that the land measures 100 yd by 850 yd. The land is actually 140 yd by 940 yd. What is the percent error in the estimated area of the land?

Answer 1

calculate the 2 areas
then use the % error equations which is

| measured - actual| /actual *100

Answer 2

@completeidiot is right, do you understand his working?

Answer 3

so add 140yd + 940yd together?

Answer 4

nope.

Answer 5

nvm i think i got it..

Answer 6

kk, tell me what you get in the end.

Answer 7

100+850=950
140+940=1080

1080-950=130

im stuck after this.. is this right ?

Answer 8

so (130/1080 ) * 100

Answer 9

@JayDS : Should`nt it be area calculation ??

Answer 10

yes, u are right, @buddhababy002 did not take note of it.

Answer 11

@buddhababy002
is should rather be
100x850=85000
140x940=131600
131600-85000=46600

Answer 12

now can you continue on from there?

Answer 13

okay.. let me try that again and see if i can do it right..

Answer 14

and in case you didn't notice @buddhababy002, we times because the area is figured out by (lxw) in this case (100x850) for the measured measurements

Answer 15

kk, take your time.

Answer 16

so after 131600-85000=46600 do i divide 46600 by 131600? Cause i did that and got 2.824??

Answer 17

in the equation up where completeidiot wrote:
calculate the 2 areas
then use the % error equations which is

| measured - actual| /actual *100

actual/actual *100

wouldn't that be 85000/85000*100?

I'm lost....

Answer 18

nono.

Answer 19

\[(\frac{measured-actual}{actua}l ) \times 100\]

Answer 20

actual* for the denominator, and sorry I'm having trouble with my internet.

Answer 21

but the top is measured-actual
bottom is actual
then times the fraction after you calculate it by 100 to get the final answer as the percentage error

Answer 22

I also have to go, so @Ganpat will help you out if you still need it.

Answer 23

yes sir, Roger that !!!

Answer 24

so would it be like this

131600-85000/131600*100?

Answer 25

actual area = 140 * 940 = 131600 sq ft

Measured error = 100 * 850 = 85000 sq ft..

error = 131600 - 85000 = 46600 sq ft..

so % error = (error/ actual) * 100 = (46600/ 131600) * 100 = 0.3541 * 100

35.41 % is error in measuring..

Answer 26

yeah, i just finally figured out what i was doing wrong.. lols
but thank you i really appreciate you explaining it more in details.

Answer 27

ha ha, i guess it was @JayD who was in much detail.. i was in brief..

You should thank him..