Question

in □ABCD side AB || side DC seg AE perpendicular seg DC if length AB = 9 cm length AE = 10 cm A (□ ABCD)=115^2 find length (DC)​

Answer 1

Answer:

in □ABCD side AB || side DC seg AE perpendicular seg DC if length AB = 9 cm length AE = 10 cm A (□ ABCD)=115^2 length (DC)​ = 14 cm

Step-by-step explanation:

Area of trapezium = (1/2)(sum of parallel side) * (distance between sides)

AE ⊥ DC

Area = (1/2)(AB + DC) * AE

= (1/2) (9 + DC) 10

= 45 + 5Dc

Area = 115 cm²

45 + 5DC = 115

=> 5DC = 70

=> DC = 14

Length of DC = 14 cm

Answer 2

Answer:

Length of DC = 14 cm

Step-by-step explanation:

Length of DC = 14 cm