- A350
- B315
- C700
- D385
Step-by-Step Solution
Base = 15*10 = 150. Two walls of 15*4 = 60 each -> 120. Two walls of 10*4 = 40 each -> 80. Total .
Answer: A) 350
An open cardboard tray (cuboid with no top) is 15 cm long, 10 cm wide and 4 cm high.
Its net has a base and 4 walls. Find the total cardboard area of the net (base plus four walls).
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