Question

please answer 10.

only a genius can answer

Answer 1

Answer:

Step-by-step explanation:

Answer is 1351.68

Answer 2

Hey mate ❤

Here's ur answer

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I. Finding the curved surface area of one pillar.
We know that, formula for CSA of cylinder
$= 2 \: \pi \: rh \: \: sq.units$
Given,
◼ r = 28cm
we convert it into 'm', as the rate of painting is given in 'm'.

[1m = 100cm]
So, 1 cm = 1/100m
28 cm = 28/100 = 0.28m

◼ h = 4 m

$= 2 \times 22 \div 7 \times 0.28 \times 4$
$= 44 \div 7 \times 1.12$

$= 44 \times 0.16$
$= 7.04m {}^{2}$

Hence, CSA = 7.04m²
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II. Now,
area of 24 pillars of same measurement

$= 24 \times 7.04 \\ = 168.96m {}^{2}$
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III. Cost of painting
$= 8 \times 168.96$
(as, rate of painting per m² is given RS. 8)

$= rs. \: 1351.68$

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Hope it helps ✔