Question

a cuboid has a total surface area of 40 m² and its lateral surface area is 26 m² find the area of its base ​

Answer 1

Answer:

Step-by-step explanation:

tsa of cuboid = 2(lb + bh + lh)

lsa = 2(lh + bh)

tsa = 40

lb + bh + lh = 20     (1)

lsa = 26

lh + bh = 13           (2)

from 1 and 2

lb + 13 = 20

lb = 7

since area of base of cuboid is lb

therefore area of base = 7 meter square  

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