Answer:

answer is 2350 sq. cm

Step-by-step explanation:

l = length   b = breadth  h = height   * = multiply

surface area of cuboid = 2 ( lb + bh + hl )

                                        = 2 ( 25 * 20 + 20 * 15 + 15 * 25 )  

                                         = 2 ( 500 + 300 + 375 )

                                         = 2 * 1175

                                          = 2350 sq. cm  

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