Convert the following hexadecimal number to equivalent binary ànd decimal(f4)16,(AC)16?

The preferred notation is 0xF4 and 0xAC being careful to use capital letters for the hex digits.

0xF4 = 11110100 That is to say F translates to 1111 and 4 translates to 0100.
0xAC = 10101100 Likewise.

Learn this stuff perfectly because in the computer business, everybody you talk to from now on will assume you know it.