в треугольнике ABC AC=12, BC=3,5, угол C=90°. Найдите радиус вписанной окружности.

Помогите пожалуйста срочно...

Как изменяется вес девочки которая прыгает через скакалку?

дополните предложения:
1.If I discovered the factory I worked in was secretly polluting the environment, I would ... 
2.If I had to live without using perfume/deodorant, I would ... 
3.If I were a hunter,  I would
4.If I lived on an island, I would ... 
5.If they tried to build a nuclear power station near my house, I would ... 
6.If I lived in a jungle, I would ... 
7. If I were an endengered spesial, I would
8.If I had to light my fire with either coal or wood, I would ... 
9.If I had to travel to work by car or by public transport, I would ... 
10.If I wanted to dump a box of rubbish, but I could not find a bin, I would ..