(a) Find the area of the trapezium in Fig. 4.80 units50 units100 units

1.	(a) Find the area of the trapezium in Fig. 4.80 units50 units100 units22.3 mB20 mFig. 4(b) Find the area of the sail in Fig. 5.C22 m46.8 mFig. 5
Answer» Answer: EULER's formula for solids ⇒ Faces+ Vertices− Edges =2 The given solid in the image is a CUBOID ∴ Faces of the cuboid =6 Vertices=8 Edges =12 putting these VALUES in Euler's formula ⇒6+8−12=2 Hence, VERIFIED.

(a) Find the area of the trapezium in Fig. 4.80 units50 units100 units22.3 mB20 mFig. 4(b) Find the area of the sail in Fig. 5.C22 m46.8 mFig. 5

Answer»

Answer:

EULER's formula for solids ⇒ Faces+ Vertices− Edges =2

The given solid in the image is a CUBOID

∴ Faces of the cuboid =6

Vertices=8

Edges =12

putting these VALUES in Euler's formula ⇒6+8−12=2