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#1 2012-11-23 13:09:19
- zee-f
- Super Member
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area
I was wondering if my answer is correct
What is the area of this rectangle(in the img)?
A 17.06 sq units [img][/img]
B 60 sq units
C 21.6 sq units
D 53 sq units
E 28.9 sq units
F 51 sq units
One, who adopts patience, will never be deprived of success though it may take a long time to reach him. Imam ali (as)<3
#2 2012-11-23 13:13:02
- zee-f
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Re: area
And I really need help with this :
18. What is the area of this polygon?
ls_XF = 53 mm ls_XV= 72 mm ls_VR= 16 mm
ls_FB = 31 mm ls_BT = 31 mm ls_EU = 47 mm
ls_UL = 31 mm ls_TL = 88 mm ls_DE= 16 mm
ls_RM= 70 mm ls_MC= 21 mm ls_DC= 70 mm
A- 8014 mm2
B- 7030 mm2
C- 6027 mm2
D- 5478 mm2
E- 1782 mm2
F- 1225 mm2
One, who adopts patience, will never be deprived of success though it may take a long time to reach him. Imam ali (as)<3
#3 2012-11-23 19:24:59
- bob bundy
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Re: area
hi zee-f
For the first, I cannot see what answer you chose.
Did you work out the width first ?
For Q18, start by making a drawing on paper. It doesn't have to be accurate, just make it look roughly like the given drawing.
Then mark on all the distances.
Split the shape into rectangles. There's more than one way of doing this step. I've shown one way on my diagram.
Using the length and width* for each rectangle, write down its area.
Add them up and you're done.
* You might have to do some adding or subtracting to work out the distances you need.
Bob
You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei
#7 2012-11-24 07:43:10
- bob bundy
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Re: area
Well it looks to me like RMCD is a rectangle, so RD = MC.
Then VE = VR + RD + DE
Or XVEF is a rectangle so VE = XF.
Try both ways and check they give the same answer.
And FE = XV
Or BE = TL - EU then FE = FB + BE
Hope that covers everything you need.
Bob
You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei
