Ricky has a wooden trunk 7 dm by 4dm by 5dm he wants to clean it all over on the surface what is the surface area of the trunk to be clean. with solutions please i wanna learn :)
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Given : Ricky has a wooden trunk 7 dm by 4dm by 5dm
To Find : the surface area of the trunk
Solution:
wooden trunk 7 dm by 4dm by 5dm
Cuboid shape
Surface area of cuboid = 2 ( lb + bh + lh )
l = 7 dm
b = 4 dm
h = 5 dm
=> Surface area of wooden trunk = 2 ( 7 * 4 + 4 * 5 + 7 * 5)
= 2 ( 28 + 20 + 35)
= 2( 83)
= 166 sq dm
surface area of the trunk to be clean. = 166 sq dm
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