A manufacturershows the model of wall of a house with one square window and two doors. The figure shows the dimensions of a wall having a square window of side 4x+5 and two identical doors of length 3x and width x?
1.what is the area of one door?
2.what algebraic identites find the total area of window?
3.The area of wall including window and door is
4.the area of window is
5.Area of wall which to be painted find as
Answers
Answer:
sooooooooooooooooooooooooo big question
Answer:
1. area of one door
It is a rectangle so
Area = length*breadth
=(3x) *( x)
=(3x) ^2
2. total area of window
It is a square so
Area = side*side
=( 4x + 5) (4x + 5)
=16(x)^2 + 20x +20x +25
=16(x) ^2 + 40 x +25
3.The area of wall including window and door is
It is a rectangle so
Area = length * breadth
=(9x + 8) (11x)
=99(x) ^2 + 88x
4.the area of window is
It is a square so
Area = side*side
=( 4x + 5) (4x + 5)
=16(x)^2 + 20x +20x +25
=16(x) ^2 + 40 x +25
5.Area of wall which to be painted find as
Area to be painted =area of wall - area of two doors - area of window
=[99(x) ^2 + 88x] - [(6x) ^2] - [16(x) ^2 + 40 x +25]
= 77(x) ^2 + 48x -25