math

a rectangular block has a square base of area 49cm square its height is 10 cm find its total surface area

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  1. If the base is a square of area 49, then each side is 7 cm
    so look at the block, you have 2 squares + 4 equal surfaces on the sides
    Surface area = 2(49) + 4(7)(10)
    = 378 cm^2

    btw, I don't understand your previous post, it looks incomplete

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  2. thanks for help.now i can understand it

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