Question

Take a circular sheet of paper Fold it into two halves. Press the fold and open L os find the crease of a diameter ? Repeat the same activity by changing the fold. How many diameters do you observe? How many more diameters can be formed?

Answer 1

Answer:

Infinite is answer please mark as brainlist

Answer 2

Answer:

Radius of semi - circular piece =14 cm

Circumference of semi - circle = πr=

7

22

×14

=44 cm

∴ Circumference of base of cone =44 cm

⇒2πR=44cm⇒R=

2×22

44×7

=7cm

Radius of semi - circular sheet = slant height of conical cup ⇒l=14cm

Now, R

2

+h

2

=l

2

⇒7

2

+h

2

=14

2

⇒h=

196−49

=

147

=7

3

cm

∴ Capacity of cup =

3

1

πR

2

h=

3

1

×

7

22

×7×7×7

3

=622.37cm

3