Math, asked by Anonymous, 5 months ago

Find curved surface area and total surface area of a cylinder when r = 7 cm and h = 12 cm

Answers

Answered by Anonymous
7

Answer:

✬ S.P = Rs 59832 ✬

Step-by-step explanation:

Given:

Cost price of sofa set is Rs 55400.

Bishnu earned 8 % after selling this sofa.

To Find:

What is the selling price of sofa ?

Solution: To find S.P when C.P and profit percent are given we use the following formula.

★ S.P = (100 + Profit%/100) × C.P ★

➮ S.P = (100 + 8/100) × 55400

➮ S.P = 108/100 × 55400

➮ S.P = 108 × 554

➮ S.P = Rs 59832

Hence, selling price of sofa is Rs 59832.

[ Verification ]

Profit = S.P – C.P

Profit = 59832 – 55400 = 4432

Using

Profit % = (Profit/C.P × 100)%

➯ 8 % = (4432/55400 × 100)%

➯ 8 % = (4432/554)%

➯ 8 % = 8 %

Answered by vishalsingh6496
2

Curved surface area

=2πrh

=2π×12×7

=168π=168×

7

22

=24×22=528cm

2

Total surface area

=CSA+2πr

2

=528+2π×7×7

=528+(2×7×22)

=528+308=836cm

2

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