Answer:
Variant c
Step-by-step explanation:
c²=4*9
c=6
You can apply phyphagor
b²=6²+9²=36+81=117

1:21 divide both digits by 9
i think it is 27 i did 5+4 then i did 9x3 and got 27
I think the answer is D, 28*11=308 plus the 12*14 equals 476. The answer is D