Question

Can someone tell me the answer to this question?

Answer 1

using Pythagoras

diagonal comes out to be 9

again

using Pythagoras

x = √9²-7.6² = √23.24 =4.82

Answer 2

x = 4.6

Explanation:

5.4 *5.4 + 7.2 * 7.2 = 78.88

x * x + 7.6 *7.6 = 78.88

x * x = 21.12

x = 4.6