Question

Out of the articles prepaid by a school under the socially useful productive campaign, 25% hangers, 30% gas stand, 9 1 2 % tables and 284 other items were prepared in a school. Find the total number of things prepared​

Answer 1

Answer:

Out of the articles prepaid by a school under the socially useful productive campaign, 25% hangers, 30% gas stand, 9 1 2 % tables and 284 other items were prepared in a school. Find the total number of things prepared

Answer 2

Answer:

Solution

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Given:

R=3cm, H=10.5cm

⇒Surface area = Curved Surface Area + Base Area

=2πrh+πr

2

=2×

7

22

×3×

10

10.5

+

7

22

×3×3cm

2

=198+

7

198

cm

2

=

7

1584

cm

2

⇒Area of cardboard sheet used by competitor =

7

1584

cm

2

⇒Area of cardboard sheet used by 35 competitors =

7

1584

×35

=7920cm