only no 3 because of I don't know it so please help
Answers
if it helps please mark it as brainliest
Step-by-step explanation:
∴Requiredsheet=592cm2
Step-by-step explanation:
\huge{\pink{\green{\underline{\red{\sf{SOLUTION-}}}}}}SOLUTION−
• In the given question information given about a piece of cardboard which was folded and make a cuboid closed box whose dimension is given.
• We have to find T.S.A of Cuboid.
\begin{gathered} \underline \bold{Given : } \\ \implies Length = 12 \: cm \\ \implies Breadth = 10 \: cm \\ \implies Height = 8 \: cm \\ \\ \underline \bold{to \: find : } \\ \implies T.S.A \: of \: Cuboid = ? \end{gathered}Given:⟹Length=12cm⟹Breadth=10cm⟹Height=8cmtofind:⟹T.S.AofCuboid=?
• We know the formula for finding Total surface area of cuboid.
\begin{gathered} \implies T.S.A \:of \: Cuboid= 2(lb + bh + hl) \\ \implies T.S.A = 2(12 \times 10 + 10 \times 8 + 8 \times 12) \\ \implies T.S.A = 2(120 + 80 + 96) \\ \implies T.S.A = 2(296) \\ \bold{\implies T.S.A = 592{cm}^{2} }\end{gathered}⟹T.S.AofCuboid=2(lb+bh+hl)⟹T.S.A=2(12×10+10×8+8×12)⟹T.S.A=2(120+80+96)⟹T.S.A=2(296)⟹T.S.A=592cm2