Longer parallel side =25cm Shorter parallel side =11cm Distance between parallel sides (height) =12cm Area =1∕2× (sum of parallel sides) × height Area =1∕2×(25+11)×12 Area of the trapezium =216cm2 Now, the area of the rectangle should be equal to this. The sides of the rectangle are in the ratio 3:2, so if we take the longer side as 3 x , the shorter side will be 2 x . Area of the rectangle = length × breadth 216=3x×2x 216=6x2 x2=36 x=6 Therefore, the longer side of the rectangle =3x=18cm, and the shorter side =2x=12cm. Perimeter =2×( length + breadth ) Perimeter =2×(18+12) Perimeter =60cm