An aquarium os in the form of a cuboid whose external measures are 80cm×30cm×40cm. The base,side face and back face are to be covered with a colored paper. The area of the colored paper required is?
a.32000cm^2 b.4600cm^2 c. 7500cm^2 d.8000cm^2

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Solution

Solution:
First area of the aquarium = 2(80 * 30 + 30 * 40 + 80 * 40)

=2( 2400 + 1200 + 3200)

= 13600

therefore area of paper needed = 13600 - (area of front face + area of the top)

= 13600 - ( 80 * 40 + 80 * 30 )

= 13600 - 5600

= 8000
(Answer)

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An aquarium os in the form of a cuboid whose external measures are 80cm×30cm×40cm. The base,side face and back face are to be covered with a colored paper. The area of the colored paper required is? a.32000cm^2 b.4600cm^2 c. 7500cm^2 d.8000cm^2

Solution: First area of the aquarium = 2(80 * 30 + 30 * 40 + 80 * 40) =2( 2400 + 1200 + 3200) = 13600 therefore area of paper needed = 13600 - (area of front face + area of the top) = 13600 - ( 80 * 40 + 80 * 30 ) = 13600 - 5600 = 8000 (Answer)

An aquarium os in the form of a cuboid whose external measures are 80cm×30cm×40cm. The base,side face and back face are to be covered with a colored paper. The area of the colored paper required is?
a.32000cm^2 b.4600cm^2 c. 7500cm^2 d.8000cm^2

Solution:
First area of the aquarium = 2(80 * 30 + 30 * 40 + 80 * 40)

=2( 2400 + 1200 + 3200)

= 13600

therefore area of paper needed = 13600 - (area of front face + area of the top)

= 13600 - ( 80 * 40 + 80 * 30 )

= 13600 - 5600

= 8000
(Answer)