Answer:
Option D) 64
Step-by-step explanation:
see the attached figure with letters to better understand the problem
<em>In the right triangle BCD find BC</em>
Applying the Pythagoras Theorem

<em>In the right triangle ABC</em>

substitute the values
-------> equation A
<em>In the right triangle BDC</em>

substitute the values
-------> equation B
equate equation A and equation B

Given:
Height of Isabelle = 62 inches
Shadow of Isabelle = 93 inches
Shadow of tree = 279 inches
To find:
The height of the tree.
Solution:
Let height of tree be x.
Ratio of height to shadow for Isabelle and tree are


The shadow of Isabelle and tree are proportional to their shadows. So, both ratios must be equal.

Multiply both sides by 279.



Therefore, the height of tree is 186 inches.
Multiplying the number by 1,000
I guess the only way to use subtraction is to take the total area of the grid and subtract it by the total area around the figure. So it since it is a 10 by 10 grid, it would be 100 (since 10*10=100) minus the area around the shape.
We can not find the answer unless we have the height of the brother.