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 :)​

Step-by-step explanation:

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answer:   28.56 feet (approx)

step-by-step explanation:

since, triangle abc has measure of angle c equal to 55 degrees, measure of angle abc equal to 90 degrees, and length of bc equal to 20 feet.

we have to find out the measurement of segment ab.

therefore, tan 55° =

but bc = 20 feet.

⇒ tan 55 ° =  

⇒ ab = 20 × tan 55 °

⇒ ab = 20 × 1.42814800674

⇒ ab = 28.5629601348   ≈ 28.56 feet