Answer :
The proof is as follows :
Step-by-step explanation:
Let NC = x
⇒ AB = 3x and AN = 2x
In Δ ABN, By using Pythagoras theorem,
AB² = BN² + AN²
⇒ BN² = AB² - AN²
⇒ BN² = (3x)² - (2x)²
⇒ BN² = 5x²
⇒ BN = x√5 .......................(1)
Now in ΔANC , Using Pythagoras theorem We have,
AC² = NC² + AN²
⇒ AC² = x² + (2x)²
⇒ AC² = 5x²
⇒ AC = x√5 ....................(2)
From equations (1) and (2) We get,
AC = BN , which is our required result
Answer:
An equation could be 2-4= -2
Step-by-step explanation:
You would count down 4 times from the the number 2 (below the line that says 3) then your answer would be -2 since below it, is -3. Obviously the number obove it would be 2.
Answer: 40 cm
So the diagonal formula is - 1/2* (d1*d2) d1 is the first diagonal and d2 is the second diagonal.
So,
1/2 * (18*d2)= 360
18*d2= 360*2
d2= 720/18
d2= 40
Answer:
Surface area of the rectangular prism= 
Step-by-step explanation:
Given Dimensions of the rectangular prism are:
Surface Area of a rectangular prism=
=
The surface area of the rectangular prism is
4.5 x 4.5 x 7 = 141.75 inches cubed
