Question

solve no.26.................​

Answer 1

Answer:

Given:- radius = 3cm, height = 10.5 ,

No. of competitors = 35

$\rule{300}{1.00}$

To find:- how much cardboard was used

$\rule{300}{1.00}$

Solution:- C.S.A of 1 Cylinder =

$2\pi rh + \pi r {}^{2} \\ = > 2 \times \frac{22}{7} \times 3 \times 10.5 \\ + \frac{22}{7} + 3 {}^{2} = > 226.28 \: cm {}^{2}$

Now CSA of 35 such cylinders = 35 × 226.28 cm² = 1188 cm²

Answer 2

Step-by-step explanation:

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