Question

Geometry (drawing)

Answer 1

A) 3600 sq ft.
B) 4600 sq ft
C) 6400 sq ft
D) 8900 sqf ft

Answer 2

so than you see it right inside this frame sou see a rectangle for what you can calculi area sure easy

and than you see the greater frame so this is a trapezoid with base (0,120) and (0,0)

yes ?

Answer 3

ok, but how do you get the measurements of the bases and the height?

Answer 4

so the length of the base will be 120 - do you see it why ,

Answer 5

which base, remember the bases are the thīngs art the left and right, the short ones

Answer 6

the length of the top vertical line will be from the 20 till 100 so will be 80 units

Answer 7

the base of trapezoid will be this line with coordinates (0,0) till (0,120) but see this trapezoid inclined 90 degree on right part - do you see it now ?

Answer 8

yes,ok

Answer 9

so for you get the necessary area you need subtract area of the rectangle what is inside greater frame from area of trapezoid - right ?

Answer 10

what is inside trapezoid what i have wrote greater frame - sorry

Answer 11

yes, but i wanted to get the are of the trapezoid first

Answer 12

do you know formula for area of a trapezoid ?

Answer 13

A=1/2 h (b1+b2)

Answer 14

ok

b1 being the greater base

so b1 = 120 yes ?

Answer 15

b2 = ?

Answer 16

yes

Answer 17

b2=80

Answer 18

yes

Answer 19

and what is the height?

Answer 20

this i wan explain to you how you can see it
i will try to explain it

look please the base has x value equal zero - yes ?
the left side ,down corner of the rectangle what is inside trapezoid has x value 10 so what will be the distance between the base of trapezoid and the left side of rectangle ?

Answer 21

10

Answer 22

exactly

Answer 23

so than you see the left side of rectangle has x value 10 and the line from the top has x value 140 so what will be the difference between ?

Answer 24

130?

Answer 25

eaxctly

Answer 26

so the height how many will be ?

Answer 27

130

Answer 28

why just 130 ? and with this 10 what will be ?

Answer 29

140

Answer 30

yes sure 140 - ok. ?

Answer 31

yes, so now i get the trapezoid area

Answer 32

how many will be ?

Answer 33

ok. and now you like to calculi area of rectangle - yes ,

Answer 34

14000

Answer 35

how you have got it ?

Answer 36

I got it, it's 3600 sq ft

Answer 37

yes 3600

here is another approach

Answer 38

ok so than you need getting area of the plot of land