Q.12. For his winter break Mayukh was told by his social science teacher to make a
model of Pakkahouse. He decided to make model of his house for his holiday homework
He did so by using glue, glass sheets and scissors. He puts coloured tape around each
edge. Measurement of each edge shown in the figure is in inches.
10
10
16
16
16
(a) How much coloured tape will be required to put around all edges?
(b) What is the area of the bottom face in square feet? (1 foot=12 inches)
(c) How many triangles are there in this pakka house?
(d) What will be the length of coloured tape required for the pakka house, if we
decrease the height of bottom cuboid from 16 inches to 10 inches?
(e) Complete the following with respect to the given model of pakka house:
(1) Faces
(ii) Edges
(iii) Vertices
Answers
Answer:
Here is the answer
Hope it helps
Answer:
Step-by-step explanation:
The figure of this question is give below:
(a) tape will be required to put around all edges = 4*edges of upper prism +4* edge of height of cuboid + 4 * length of cuboid + 4 * width of cuboid
= 4 * 10 + 4 * 16+ 4 * 8 + 4* 8
= 40 +64 +32+32
=168
(b) The area of the bottom face in square feet = area of square
= side * side
= 8 *8
= 64 inches
in square feet we have to divide by 144= 64 /144
= 0.4444 square feet
(c) triangles are there in this pakka house = 4
(d) the length of coloured tape required for the pakka house, if we
decrease the height of bottom cuboid from 16 inches to 10 inches=
4 * 10 + 4 * 10+ 4 * 8 + 4* 8
40 +40+ 32+32
= 144
(e) (1) Faces= 9
(ii) Edges= 16
(iii) Vertices=9
