Question

The one who will answer this question will be marked as brainliest​

Answer 1

Answer:

62.85

Step-by-step explanation:

LSA of cone = πrl

= 22/7 * 4 * ( √ 4^2 + 3^2)

= 22/7 * 4 * 5

= 440/7

= 62.85 cm^2

Answer 2

Answer:

Ans -

$62 \times \frac{6}{7} cm {}^{2}$

Step-by-step explanation:

h = 3cm

r= 4 cm

${l}^{2} = {r}^{2} + {h}^{2} \\ {l}^{2} = {4}^{2} + {3}^{2} \\ {l }^{2} = 16 + 9 \\ {l}^{2} = 25 \\ l = \sqrt{25 } \\ l = 5$

Now C.S.A.cone = ¡~¡ r l

22/7 ×4×5

440/7 cm^2

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