Search
Ask a question
0

An open tin box, 21 cm long, 9 cm wide, 8 cm high, is fitted with a thin lid which overlaps to a depth of 1 cm

An open tin box, 21 cm long, 9 cm wide, 8 cm high, is fitted with a thin lid which overlaps to a depth of 1 cm all round. What is the total area of tin sheeting used for the box and the lid?

1 Answer by Expert Tutors

Tutors, sign in to answer this question.
Francisco E. | Francisco; Civil Engineering, Math., Science, Spanish, Computers.Francisco; Civil Engineering, Math., Sci...
5.0 5.0 (1 lesson ratings) (1)
0
Check Marked as Best Answer
The area for the open box is (21+21+9+9)*8 + (21*9) = 669 cm2
The area for the lid will be (21+21+9+9)*1 + (21*9) = 249 cm2
Total area = 918 cm2