A
Explanation: finding volume is a measure of how much space an object takes us.
Kiki wants to know how wide or how much space of her wall her window is taking up therefore the answer is A
We will calculate it like this, We will make a right angle triangle by adding one new point called O for example, and O is located right under the point C, and on the right side of point D, so the coordinated for this point are O (8, -2). From there, length CD is calculated using the Pythagorean theorem, because we know that the CO = 4 and DO = 4, so:
CD^2 = CO^2 + DO^2
CD^2 = 4^2 + 4^2
DC^2 = 16 + 16
DC^2 = 32
DC = square root of 32 = square root of 16 * square root of 2
DC = 4 * square root of 2
The correct answer is B. 4*square root of 2.
12^2 + 9^2 = 225
the square root of 225 = 15
x = 15
3.5-= 7/2 3.5 =350 percent thats what i got sorry if it doesnt help