Historiography refers to the study of the history of a. ancient civilizations b. the earliest humans c. writing history d. historical themes

I think its C but i’m not 100% sure

Wouldn't be (C) If not please correct me!!!

Given w
you know the value of the height of the wall, and the distance between the foot of the ladder from the wall, you can conveniently find the length of the ladder...
using the Pythagorean theorem
the length therefore equals
√[(height of wall) ² + (distance of ladder from wall) ²]
= √[ 8² + 12²]
= √64+144 = √208
≈14.42 ft

this is a real life application of the Pythagorean theorem