double task8(int x, int y) {
	std::cout << pow(x, y);
}

double task9(double num) {
	double a, b;
	a = num * num;
	b = a * a;
	b = b * b;
	std::cout << a * b;
}

int task10(int n) {
	std::cout << 2 + rand() % (n - 3);
}

void task11(int a, int b) {
	std::cout << a + rand() % (b - a + 1) << std::endl;
	std::cout << a + rand() % (b - a + 1) << std::endl;
	std::cout << a + rand() % (b - a + 1) << std::endl;
}

void task12(int a, int b) {
	double f = (double)rand() / RAND_MAX;
	std::cout << a + f * (b - a);
}

void task13(double ax, double ay, double bx, double by, double cx, double cy) {
	std::cout << 0.5 * fabs(ax - cx) * (by - cy) * (ay - cy) * (bx - cx);
}

void task14(double r) {
	std::cout << "S: " << M_PI * pow(r, 2) << "\nP: " << 2 * M_PI * r;
}