Saved Bookmarks
| 1. |
15 cm8. In Fig. 15.6, PQ and SR are parallel sides of a trapezium PQRSand ZPSR = 90°. Given that PQ = 15 cm, SR = 40 cm and thediagonal PR-41 cm, calculate the area of the trapezium.41 cm40 emFig 15.5 |
|
Answer» Length of parallel sides=15 cm and 40 cmTo find height...by Pythagoras theorem..c^2= a^2 + b^241^2= a^2 + 40^21681-1600= a^281=a^2a=9so, the height of the trapezium is 9cm.Area of trapezium= 1/2 *h*(a+b)=1/2*9*(15+40)=4.5*55=247.5cm^2 7rdttidtigiitxugyixytxtcuvhv |
|