Question

find the area of trapezium,whose two parallel sides are3m and 4 m2 dm respectively each of other sidesof trapezium is 2 m​

Answer 1

Step-by-step explanation:

According to the figure,

In ΔBNC,

Pythagoras

BN2 + NC2 = BC2

BN2 + 0.62 = 22

BN2 = 4 - 0.36 = 3.64

BN = 1.91 m

Find area of trapezium we get begin mathsize 16px style 1 half cross times open parentheses AB plus MN close parentheses cross times distance space between space two space parallel space sides equals fraction numerator begin display style 1 end style over denominator begin display style 2 end style end fraction cross times open parentheses 3 plus 4.2 close parentheses cross times 1.91 equals 6.876 space straight m squared end style