I believe the answer is 2 because 1/2 x 4 = 4/2 =2
Answer:
(2p + 2r) expression represents the perimeter of the rectangle.
The correct option is D )
D ) 2p + 2r
Step-by-step explanation:
Given:
Let p be the Length of Rectangle
Let r be the Width of Rectangle
To Find:
Perimeter of Rectangle = ?
Solution:
Perimeter of Rectangle:
Sum of Twice Length and Twice Width,
i.e
![\textrm{Perimeter of Rectangle}=2\times Length + 2\times Width](https://tex.z-dn.net/?f=%5Ctextrm%7BPerimeter%20of%20Rectangle%7D%3D2%5Ctimes%20Length%20%2B%202%5Ctimes%20Width)
So we will have
![\textrm{Perimeter of Rectangle} =2p+2r......................as\ required](https://tex.z-dn.net/?f=%5Ctextrm%7BPerimeter%20of%20Rectangle%7D%20%3D2p%2B2r......................as%5C%20required)
(2p + 2r) expression represents the perimeter of the rectangle.
The correct option is D )
D ) 2p + 2r
Answer:
32
Step-by-step explanation: OH NO MY SEXUALITY ITS BROCKEN
Answer:
Step-by-step explanation:
Xét tam giác AHC và tam giác BAC có
góc AHC = góc BAC =90°
Góc C chung
Suy ra tam giác AHC đồng dạng với tam giác BAC
Suy ra AH×BC=AB×AC
Suy ra h.a=b.c
Suy ra h^2.a^2=b^2.c^2
Suy ra h^2.(b^2+ c^2 )=b^2.c^2
( áp dụng định lí pytago vào tam giác ABC)
Suy ra 1/h^2=c^2+ b^2/b^2.c^2
Suy ra 1/h^2=1/b^2+1/c^2