Question

12 cubical blocks kept side by side in 3 rows of 4 cubes make a cuboidal solid. If edge of each cube is 5 cm, find the dimensions of the cuboid and its surface area.

Answer 1

Answer:

Step-by-step explanation:

l=20,b=15and h=5

Answer 2

Dimensions of the cuboid is 20 cm by 15 cm by 5 cm and its surface area is 950 sq. cm.

Step-by-step explanation:

12 cubical blocks kept side by side in 3 rows of 4 cubes make a cuboidal solid.

If edge of each cube is 5 cm, then the length of the cuboidal solid has length (4 × 5) = 20 cm, width (3 × 5) = 15 cm and height is 5 cm. (Answer)

Now, the total surface area of a cuboid with length L, Width W and Height H is given by 2(LW + WH + HL) sq. units.

Now, in our case the total surface area of the cuboid will be = 2(20 × 15 + 15 × 5 + 5 × 20) sq. cm.

= 950 square cm. (Answer)