14. The area of a trapezium is 18 s...
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14. The area of a trapezium is 18 sq cm. Its height and base are 3 cm and 5 cm respectively. Find the length of the side parallel to the base. RRB NTPC (Phase I) 2016 (1) 4 cm (2) 6 cm (3) 8 cm (4) 7 cm

11th - 12th Class
Maths
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14. (4) Area of trapezium ( =frac{1}{2} times(a+b) times h ) ( Rightarrow quad 18=frac{1}{2} times(5+b) times 3 ) ( 36=15+3 b ) ( therefore quad b=frac{21}{3}=7 mathrm{cm} )
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