Can anyone give me the answers to these with the work. Will give brainliest

Answer:
(13) = 10
(14) = 30
(15) = 26.64
(16) = 42.9
(17) = 64.5
(18) = 129.01
(19) = 47.84
(20) = 17.55
(21) = 38.16
(22) = 17.55
Step-by-step explanation:
M U L T I P L I C A T I O N
10
x
3
-----
30
top down is hard to put with keys