The dimension of the screen of a flat tv are 90cm*60cm the screen has 4-cm broad boundary all around.find the area of the boundary.
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5
It is said that there is a boundary around the screen which is of width 4cm
So the area of the boundary =area of the tv with the boundary -area of the screen
Area of the screen with the boundary is (90+4)*(60+4)
=94*64
=6016 cm^2
Area of the screen is
90*60
=5400 cm^2
Therefore the area of The boundary is =
6016-5400 cm^2
=616 cm^2
Therefore the are of the boundary is 616cm^2
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So the area of the boundary =area of the tv with the boundary -area of the screen
Area of the screen with the boundary is (90+4)*(60+4)
=94*64
=6016 cm^2
Area of the screen is
90*60
=5400 cm^2
Therefore the area of The boundary is =
6016-5400 cm^2
=616 cm^2
Therefore the are of the boundary is 616cm^2
Plz mark as brainliest
Answered by
4
Given : dimension of the screen of a flat tv are 90cm*60cm the screen has 4-cm broad boundary all around
To Find : the area of the boundary.
Solution:
Screen Size = 90cm*60cm
Screen Size area = 90 x 60 = 5400 cm²
4-cm broad boundary all around
Height including boundary = 60 + 4 + 4 = 68 cm
Width including boundary = 90 + 4 + 4 = 98 cm
Area including Boundary = 98 * 68 = 6,664 cm²
area of the boundary. = 6,664 - 5,400
= 1,264 cm²
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