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