Question

7. Find the total surface area of a cuboid whose length is 12cm, breadth is 9cm and height is 5cm
​

Answer 1

Answer:

Given:-

• Length (l) = 12 cm

• Breadth (b) = 9 cm

• Height (h) = 5 cm

To Find:-

• Total Surface Area (TSA) of Cuboid

Formula used:-

• TSA of Cuboid = 2 ( lb + bh + hl )

Solution:-

⟾ TSA of Cuboid = 2 ( lb + bh + hl )

⟾ TSA of Cuboid = 2 ( 12×9 + 9×5 + 5×12 )

⟾ TSA of Cuboid = 2 ( 108 + 45 + 75 )

⟾ TSA of Cuboid = 2 ( 228 )

⟾ TSA of Cuboid = 456 cm²

Hence, The Total Surface Area of Cuboid is 245 cm².

━━━━━━━━━━━━━━━━━━