Q. 64.1( 348 Votes )

A small indoor greenhouse (herbarium) is made entirely of glass panes (including base) held together with tape. It is 30 cm long, 25 cm wide and 25 cm high.

(i) What is the area of the glass?

(ii) How much of tape is needed for all the 12 edges?

Answer :




(i)
Length (l) of green house = 30 cm

Breadth (b) of green house = 25 cm


Height (h) of green house = 25 cm


Total surface area of green house


= 2[lb + lh + bh]


= [2(30 × 25 + 30 × 25 + 25 × 25)] cm2


= [2(750 + 750 + 625)] cm2


= (2 × 2125) cm2


= 4250 cm2


Therefore, the area of glass is 4250 cm2


(ii) It can be observed that tape is required alongside AB, BC, CD, DA, EF, FG, GH, HE, AH, BE, DG, and CF


Total length of tape = 4(l + b + h)


= [4(30 + 25 + 25)] cm


= 320 cm


Therefore, 320 cm tape is required for all the 12 edges

Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Related Videos
Surface Area and Volume of Right Circular CylindersSurface Area and Volume of Right Circular CylindersSurface Area and Volume of Right Circular Cylinders42 mins
Surface Area and Volume of SpheresSurface Area and Volume of SpheresSurface Area and Volume of Spheres40 mins
Surface Area and Volume of Right Circular ConeSurface Area and Volume of Right Circular ConeSurface Area and Volume of Right Circular Cone37 mins
R D Sharma | Surface Area and VolumesR D Sharma | Surface Area and VolumesR D Sharma | Surface Area and Volumes39 mins
Quiz | Surface Area and VolumesQuiz | Surface Area and VolumesQuiz | Surface Area and Volumes43 mins
Quiz | MensurationQuiz | MensurationQuiz | Mensuration42 mins
Quiz | Surface Area & VolumesQuiz | Surface Area & VolumesQuiz | Surface Area & Volumes49 mins
RD Sharma | Surface areas and volumes of Cube & CuboidRD Sharma | Surface areas and volumes of Cube & CuboidRD Sharma | Surface areas and volumes of Cube & Cuboid33 mins
10 Important Questions of Surface Area and Volume10 Important Questions of Surface Area and Volume10 Important Questions of Surface Area and Volume51 mins
Surface Area and Volume of ConeSurface Area and Volume of ConeSurface Area and Volume of Cone24 mins
Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation
caricature
view all courses
RELATED QUESTIONS :