The cross-section of a piece of metal 2 m in length is shown in
the adjoining figure.
Calculate : (i) the area of its cross-section;
(ii) the volume of piece of metal;
(ii) the weight of piece of metal to the nearest kg,
if 1 cm3 of the metal weighs 6.5 g.
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2
Answer:
i)162 sq cm
ii)162 cu cm
iii)1053 g
Answered by
9
Step-by-step explanation:
Area of rectangle = l x b
= 12 x 13
= 156 cm
Area of triangle = 1/2 x base x height
= 1/2 x 13 x 4
= 26 cm
Total area of cross section = 156+26
= 182cm^2
2m = 200 cm
Volume of piece of metal = 182cm^2 x 200cm
= 36400cm^3
1cm^3 of weight of metal = 6.5g
36400cm^3 of weight of metal = 36400 x 6.5/1000
= 236.6 kg
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