1.1. The SaveMyExams logo is made up of a blue circle with a black lightning bolt through the centre.

The boss of the company is preparing a giant version of this logo for a company banner. 

Using a smaller version of the logo, he models the lightning bolt as two congruent triangles ABC and DEF where

• AB = DE = 12 cm

• BC = EF = 15 cm

• AC = DF = 7 cm

as shown in the diagram below.

Angle ABC is $\alpha$°.

Find the size of angle ABC, to 1 decimal place.

1.2. For the banner, the boss wants to increase the side lengths of the smaller logo by a scale factor of 10.

Find the area the lightning bolt will take up on the banner, to 3 significant figures, in m².