A cistern 6m long and 4 m wide contains water up to a depth of 1 m 25 cm. The total area of the wet surface is:
Choose the correct choice from the following.
A) 49 m2
B) 50 m2
C) 53.5 m2
D) 55 m2
E) 58
Area of the wet surface	= [2(lb + bh + lh) - lb]   = 2(bh + lh) + lb   = [2 (4 x 1.25 + 6 x 1.25) + 6 x 4] m2   = 49 m2.   49 m2nswer: Option 49 m2
<result>A</result>
A cistern 6m long and 4 m wide contains water up to a depth of 1 m 25 cm. The total area of the wet surface is: