Simplify Find the total surface area of cubid of length , breadth and height as given below 8cm,3.5cm,5cm
Answers
Explanation:
(1) length =12 cm breadth =10 cm height =5 cm
TSA=2(lb+bh+lh)=2[12×10+10×5+5×12]
TSA=2[120+50+60]=2×230
[TSA=460cm
2
]
(2) length =5 cm breadth =3.5 cm height =1.4 cm
TSA=2(lb+bh+lh)=2[5×3.5+3.5×14+1.4×5]
TSA=2[17.5+4.90+7.0]=2[29.4]
[TSA=58.8cm
2
]
(3) length =2.5 cm breadth =2 m height =2.4 m
TSA=2(lb+bh+lh)=2[0.025×2+2×2.4+2.4×0.025]
TSA=2[0.05+4.8+0.0600]=2[4.91]
(4) length =8 m breadth =5 m height =3.5 m
TSA=2(lb+bh+lh)=2[8×5+5×3.5+3.5×8]
TSA=2[40+17.5+28.0]=2[85.5]
[TSA=171.0m
2
]
Answer:
Hii,
Total surface area of cuboid = 171 cm²
Explanation:
length ( l ) = 8 cm
breadth ( b ) = 3.5 cm
height ( h ) = 5 cm
the formula for total surface area of cuboid
= 2 ( lb + bh + lh )
thus, here,
total surface area
= 2 ( 8 * 3.5 + 3.5 * 5 + 8 * 5 )
= 2 ( 28.0 + 17.5 + 40 )
= 2 ( 85.5 )
= 171 cm²
therefore, total surface area of cuboid is 171 cm² / 171 sq. cm.
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