1. A wooden box measures 8 dm long, 6 dm wide, and 4 dm high. What is the surface area of the box?


2. A house has a roof in the form of a square pyramid with base of 8m and slant height
of 3.5m. How many square meters are there on the surface of the roof?

3. A tin can used for cooking
oil measures 14 cm high and 10 cm in diameter. How
many square centimetres of tin will be required for 2 dozen cans?

with solution please :)​