Raju wants to paint a cuboidal box which is 20 cm in length , 15 cm in breadth and 6 cm in depth. Find the area to be painted if the box is open at the top.
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Raju wants to paint a cuboidal box which is 20 cm in length , 15 cm in breadth and 6
Answer:
ɢɪᴠᴇɴ:-
ᴛᴏ ғɪɴᴅ :-
sᴏʟᴜᴛɪᴏɴ :-
We know that,
Area of Cuboid(Box) = 2(lb + lh + bh)
➡️ 2(lb + lh + bh)
➡️ 2(20 × 15 + 20 × 6 + 15 × 6)
➡️ 2(300 + 120 + 90)
➡️ 2(510)
➡️ 1020 cm²
Now,
Required area of Box = Area of box - Area of Top
➡️ Required area = 1020 - (l × b)
➡️ 1020 - (20 × 15)
➡️ 1020 - 300
➡️ 720 cm²
Hence,
Area of Box to be painted is 720 cm²
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