wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

A rectangular cardboard of dimensions 20 m × 10 m is placed on a table. 4 squares of side 2.5 m are cut out from the corners and the 4 sides are folded . Find the surface area of the resulting figure which is to be painted on all the sides.


A

175

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
B
155
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
180
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
100
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is A

175


A square of side 2.5 m is cut off from all the corners. Therefore, the length of a rectangular sheet changes to 15 m (20 - 2 × 2.5) and breadth to 5 m (10 - 2 × 2.5)

Therefore, the surface area of the resulting figure = sum of areas of I, II, III, IV, V

= (15 × 2.5) + (5 × 2.5) + (15 × 2.5) + (5 × 2.5) + (15 × 5) = 175 m2


flag
Suggest Corrections
thumbs-up
1
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Total Surface area of a Cylinder
MATHEMATICS
Watch in App
Join BYJU'S Learning Program
CrossIcon