A cubical box having side 10 cms is to be painted with red and white colour from outside. If the top is painted with red, and other part with white, find the total area to be painted with white
Answers
Answer:
500cm² is to be painted white.
Step-by-step explanation:
Given that the side of cube = 10cm
Given that the top is painted red
=> the top of the cube is painted red.
=> Area of one cubical side is painted red.
Therefore, area that is painted red = 10cm * 10 cm
= 100 cm²
It is given that the rest of the cube is painted white.
=> all sides except the top is painted white
=> Area that is white = Area of the cube - Area that is red
We know that Area of a cube = 6*(side)²
= 6*(10)²
= 6*100
= 600cm²
Therefore, area to be painted white = 600cm² - 100cm²
= 500cm²
Therefore, 500cm² is to be painted white.