1)
y²+6²=10²
y²+36=100
y²=100-36
y²=64
y=√64
y = 8
2)
(3√3)² * (2√5)² = b²
9*3 * 4 * 5 = b²
27 * 20 = b²
b = √540
b = 6√15
