Question

12. A diagonal of a quadrilateral is 40 cm long and the pre pendicular to it opposite corner are 8 and 10 respectively (fig .11.15)​

Answer 1

Answer:

diagonal (d) of the quadrilateral = 40cm

the two perpendicular be p1 and p2

then, p1=8cm and p2=10cm

Area of a quadrilateral = d/2(p1 + p2)

= 40/2(8+10)

= 20(18)= 20×18

= 360 sq.cm