Can someone help me with this with the work please I don’t know how to do this

9. 45.36

10. 24.44

Step-by-step explanation:

9. Find the height, 10^2 - 8.4^2, take the square root of it

Then take the total base legnth and plug it into the equation A=(H x B)/2

10. 7^2 - 5.2^2, take the square root then take the total base legnth and plug it into the equation A=(H x B)/2

8+10

step-by-step explanation:

you multiply 4 by 2 and 5 by 2

hm let me think hm think think hm think yes