Question

if the length,breadth,height of a cuboid are 12cm,4cm,3cm respectively find the total surface area , lateral surface area and the length of the diagonal​

Answer 1

Answer:

Step-by-step explanation:

TSA=(12×4

Answer 2

Length= 12 cm =l

Breadth = 4 cm =b

Height = 3cm =h

Total surface area = 2 ( l×b + b×h + h× l)cm²

                                 = 2× ( 12×4 + 4×3 +3× 12) cm²

                                 =2×(48+12+36)cm²

                                 = 2×( 96 )cm²

                                 =192cm²

Lateral surface area = 2h ( l+b)cm²

                                   =2×3 ( 12+4)cm²

                                   =6×16cm²

                                   = 96cm²

the length of the diagonal​ = √l² + √ b² +√h² cm

               =√12² + 4²+3²cm

               =√169cm

               = 13cm

Ans :-Total surface area is 192 cm²,Lateral surface area is 96cm², and the length of the diagonal​ is 13 cm.