Since

Is a perfect square, we can think of the "-6" at the end as a "+4-10" and we have

Which is the required form
Pythagorean Theorem is for right triangles
right triangles have a 90 degree angle in them
D is a right triangle
Answer:
A - 29
Step-by-step explanation:
she is Nine so
her dad will be
2+9×3
2+27
29