Calculate the area of the shape shown:
- 12 sq.ins.
- 14 sq.ins.
- 16 sq.ins.
Explanation from PART66Online
Split the shape into three rectangles. The top and bottom flanges are each 4 in wide and 1 in deep (the 1 in at the top, and 5 - 4 = 1 in at the bottom), so each is 4 x 1 = 4 sq in. The web is 3 - 1 = 2 in wide and runs between the flanges, 4 - 1 = 3 in high, so it is 2 x 3 = 6 sq in. The total is 4 + 4 + 6 = 14 sq in.
F
faris92 asked · 6 Nov 2012
Someone please explain why ?
Community Comments (2)
D
DavidStangl
11 Nov 2012
you just have to split it up in 3 areas
4*1+(4-1)*(3-1)+(5-4)*(3+1)
4*1+(4-1)*(3-1)+(5-4)*(3+1)
T
Thai Minh Hoang
20 Nov 2012
Better is: 4*5 - 2*(1*3)=14
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