1103021409

SubArea: 
Polygons
Level: 
B
Project ID: 
1103021409
Accepted: 
1
Clonable: 
0
Easy: 
0
Give the area of the isosceles trapezium \( ABCD \), if \( AB \parallel CD \), \( |CD| = 4\,\mathrm{cm} \), the height \( v = 16\,\mathrm{cm} \) and the measure of \( \measuredangle CAB \) is \( 30^{\circ} \). Round the result to units.
\( 443\,\mathrm{cm}^2 \)
\( 10\,\mathrm{cm}^2 \)
\( 411\,\mathrm{cm}^2 \)
\( 143\,\mathrm{cm}^2 \)