Question

3. 13.10
diameter of 20 cm and height of 30 cm. A margin of 2.5 cm
is to be given for folding it over and if the lrcture the for year ahead the top and bottom of the
frame. Find how much cloth is required for covering the
lampshade.
Fig. 13.12
11. The students of a Vidyalaya were asked to participate in a competition for making and
decorating penholders in the shape of a cylinder with a base, using cardboard. Each
penholder was to be of radius 3 cm and height 10.5 cm. The Vidyalaya was to supply
the competitors with cardboard. If there were 35 competitors, how much cardboard
was required to be bought for the competition?
8 cm?. Find the
ameter 140 cm
for the same?
irface Area of a Right Circular Cone
10. In Fig. 13.12. you see the frame of a lampshade. It is to be
covered with a decorative cloth. The frame has a base
So far, we have been generating solids by stacking up congruent figures. Incidentally,
such figures are called prisms. Now let us look at another kind of solid which is not a
rim(These kinds of solids are called pyramids.). Let us see how we can generate​

Answer 1

Answer:

fggc hhbubbvbbnjj njgbnjb

Answer 2

Answer:

10. 2200 cm sqare

Explanation:

height of the cylinder should be treated as ( 30+2.5+2.5) cm