Question

A cuboid has total surface area of 372cm square and its lateral surface area os 180 cm square find the area of its base

Answer 1

Answer:96cm square

Step-by-step explanation:

2h(l+b)=180cm square

2lh + 2bh= 180cm square

lh + bh = 90 cm square.......( i.)

2lb + 2bh + 2lh=372cm square

lb + bh + lh=186 cm square .....(ii.)

Subtracting (i.) from (ii.) we get,

lb = 186cm square - 90 cm square

Hence,lb= 96cm square.

Answer 2

Answer:96cm square

Step-by-step explanation:

2h(l+b)=180cm square

2lh + 2bh= 180cm square

lh + bh = 90 cm square.......( i.)

2lb + 2bh + 2lh=372cm square

lb + bh + lh=186 cm square .....(ii.)

Subtracting (i.) from (ii.) we get,

lb = 186cm square - 90 cm square

Hence,lb= 96cm square.