Основание пирамиды abcds является прямоугольник абсд со сторонами аб=5 бс=8 высота пирамиды so= 10
1)доказать что около пирамиды абсдs можно описать сферу
2)найти радиус сферы описанной около пирамиды абсдs

This is my brother tom. 32) _he is twenty-three years old and 33) hobbies are swimming and skiing. tom also likes animals andn34) __he__ has got two pets; a dog and a cat. 35) __their__ names are rumbo and gretta. he has a fast bicycle and he likes riding it. 36) __its__ colour is red! laura, tom’s girlfriend, is twenty years old and it’s 37) __her__ birthday next week. 38) are going to have dinner together in an expensive restaurant.