Answer:
EF
Step-by-step explanation:
BC is the hypotenuse of the left triangle. The corresponding side on the right triangle would be EF.
The corresponding side to BC is EF.
Look at the bolded letters
ABC ⇒ DEF
notice the similarities?
1
multiply and divide(left to right)
=9-9+1
Add and subtract(left to right)
=1
The area of the shaded region is 21.45cm².
can u explain more
