A rectangular copper plate measures 50 cm ×40 cm. A small square of side 5 cm is cut out from each corner and the sides are folded to make an open box.
Find the external surface area and the volume of the box.
Share
A rectangular copper plate measures 50 cm ×40 cm. A small square of side 5 cm is cut out from each corner and the sides are folded to make an open box.
Find the external surface area and the volume of the box.
Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.
Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.
Answer:
External Surface Area = 2375cm²
Volume = 7875 cm³
Step-by-step explanation:
Since Each Corners are Cut By 5 m then Length and Breadth are reduced By 5 cm and Height Will Be 5 cm:-
Length =)50- 5 = 45cm
Breadth =)40 - 5 = 35cm
Height =)5 cm
First:-
Total Surface Area(T.S.A) :- 2 (lb + bh + hl)
=)2((45 x 35) + (35 x 5) + (5 x 45))
=)2(1575 + 175 + 225)
=)2 x 1975
=)3950m²
External Surface Area =)T.S.A - Area of roof
=)3950 - (45 x 35)
=)3950 - 1575
=)2375 m²
NOW,
Volume = Length x Breadth x Height
=)45 x 35 x 5
=)7875 m³
Hope it helped