Question

Find the surface area of a cuboid whoselength = 3.2 m, breadth = 30 dm, height = 250 cm.

Answer 1

\[\text { Dimensions of the cuboid: } \]

\[\text { Length = 3 . 2m }\]

\[ = 3 . 2 \times 10 dm (1 m = 10 dm)\]

\[ = 32 dm\]

\[\text { Breadth = 30 dm } \]

\[\text { Height = 250 cm }\]

\[ = 250 \times \frac{1}{10}dm (10cm = 1 dm)\]

\[ = 25 dm\]

\[\text { Surface area of the cuboid = 2 } \times (\text { length } \times \text { breadth + breadth}\times \text { height + length } \times\text {  height })\]

\[ = 2 \times (32 \times 30 + 30 \times 25 + 32 \times 25)\]

\[ = 2 \times (960 + 750 + 800)\]

\[ = 5020 {dm}^2\]