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Question
calculate total surface area of the outside of an open box(without a lid)which has a base measuring 8cm by 4cm and height of 5cm?
calculate total surface area of the outside of an open box(without a lid)which has a base measuring 8cm by 4cm and height of 5cm?
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Solution
Dear user!
Total surface area of the open box
= Area of four walls + Area of base
= 2(l + b) × h + lb
= [2 (8 + 4) × 5 + 8 × 4] cm2
= [2 × 12 × 5 + 32] cm2
= 152 cm2
Cheers!
Dear user!
Total surface area of the open box
= Area of four walls + Area of base
= 2(l + b) × h + lb
= [2 (8 + 4) × 5 + 8 × 4] cm2
= [2 × 12 × 5 + 32] cm2
= 152 cm2
Cheers!
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