Question

Q) a room is 12m long 4m wide and 3m high what will be the longest bar that can be placed in a room?
Q) If each edge of a cube is10cm,then find its total surface area and volume


2questions pls solve​

Answer 1

Step-by-step explanation:

1.

Length = 12 m, breadth = 4 m, height = 3 m.

Longest bar that can be placed in a room is nothing but its diagonal.

Length of longest bar = √l² + b² + h²

=> √12² + 4² + 3²

=> √144 + 16 + 9

=> √169

=> 13 m

2.

Side S = 10 cm.

volume of cube = S³ = 10³ = 1000 cm³.

Total surface area = 6 * side = 6 * 10 = 60 cm².

#Hope my answer help you!

Answer 2

Step-by-step explanation:

i can explane in the upper photo