The mass of the rock in kg is 90,000 kg
R in this equation refers to the radius
Use Pythagorean's Theorem to solve for the missing leg length.

with a being the length of the missing leg. Simplifying we have

and
. If we are told to express our answer to the nearest tenth of an inch, then we are simply plugging that into our calculator to get 26.45 or, rounded correctly, 26.5
Answer:
the answer should be 3.914 or 4
Step-by-step explanation:
hope it helps!
I am guessing that Part A: 3.914
and Part B: 4