Question

The whole surface area of a cuboid 28 cm long, 16 cm broad and 7.5 cm height, is: 

   A.) 1656 cm2

   B.) 1546 cm2

   C.) 1566 cm2

   D.) 1556 cm2

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Answer 1

Step-by-step explanation:

sa=2(l*b+b*h+h*l)

sa=2(28*16+16*7.5+7.5*28)

sa=2(448+120+210)

sa=2(778)

sa=2*778

sa=1556 cm2

Answer 2

length = 28cm , broad = 16cm ,

height = 7.5 cm

so, TSA of cuboid = 2(LB + BH + HL )

= 2(28×16 + 16×7.5 + 7.5 ×28)

= 1556 cm2