(ii) How much of tape is needed for all the 12 edges
Answers
Hope it helps you.
Given : Manu was told by his science teacher to make a model of a rectangular pyramid
He did so by using glue, glass sheets and scissors. He put coloured tape around each edge.
To Find : a) How much coloured tape will be required to put around all edges?
(b) What is the area of the bottom face in________feet? (1foot = 12inches)
(c) How many triangles are there ?
(d) What will be the length of coloured tape required for the house, if we decrease the height by 3 inches?
(e) Complete the following w.r.t. the given model of rectangular pyramid :
(i) Faces = ______ (ii ) Edges =______ (iii) Vertices =______
Solution:
coloured tape will be required to put around all edges
= 2 ( 10 + 4) + 4 * 13
= 28 + 52
= 80 inches
Area of bottom Face = 10 * 4 = 40 sq inches
in sq feet = (10/12) * (4/12) = 40/144 = 5/18 sq feet
4 triangles are there
length of coloured tape required for the house, if we decrease the height by 3 inches
( assuming edge length of triangle reduced by 3 inches )
= 2 ( 10 + 4) + 4 * (13 - 3)
= 28 + 40
= 68 inches
(i) Faces = 5 (ii ) Edges = 8 (iii) Vertices = 5
Learn More:
A regular hexagonal pyramid has a base area of 166.28 square feet ...
brainly.in/question/9609643
A grocer stacks orange in a pyramid-like stack whose rectangular ...
brainly.in/question/11615340
