SDG

SDG 7/Affordable and clean energy

The tangible benefits of lighting have been documented in many case studies; an analysis in Bangladesh found that over 90% of recently electrified households reported improvements in children's study time, household security, and overall well-being

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Task: Citizen Math text

You are standing near four electric boxes. Add together all the numbers (digit by digit) of their serial numbers - this will be "x". If "x" represents percentage - fill in the first gap!
If "x" represent a [articular year in 20'th century - what film would win the Cannes Palme d'Or at that year? Fill in the second gap!
If "x" is an angle in degrees in a triangle with two sides that are 4m and 7m long, how long will the third side be? fill in the third gap (leave only full meters)!

In Bangladesh, over **90**% of recently electrified
households reported improvements in children's study time, household security, and overall well-being.
The movie is: **Wild at Heart**
The third side of a triangle is **8**m long.

Sample solutions

The sum is 90.
Percentage is 90%
The year is 1990 and the winner was "Wild at Heart"

1)
Use formula c=√(4²+7²)=8.06m

2)

trigonometric equations: tan A = a/b=0.57143132 => A=29.745 deg
cos(29.745 deg)=0.868242=b/с=7/c; c=8.06m

Movies and film. 59.4572952 24.8899710