Question

CLASS 8TH
"MENSURATION"

Rekha has 50 circular plates , each of radius 7cm and thickness 0.5cm. she placed them one above another to form a solid right circular cylinder 1cm³ of plate has 0.4g mass.

(1) The total surface area of the right circular cylinder is
1. 1004 cm²
2. 1404 cm²
3. 1408 cm²
4. 1206 cm²

(2) The volume of the cylinder is
1. 5120 cm³
2. 3850 cm³
3. 3210 cm³
4. 1206 cm³

(3) The mass of the solid right circular cylinder will be
1. 1620g
2. 1400g
3. 1710g
4. 1540g

(4) The curved surface area of the right circular cylinder is
1. 1403 cm²
2. 1100 cm²
3. 1008 cm²
4. 1204 cm²


❌ Please give correct answer with EXPLANATION ( I am giving 40 points so yeah pls ). Irrelevant / Wrong answers will be reported ❌

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Answer 1

Answer:

(1)-1408,,(2)-3850,,(3)-,1540,,,(4)-1100

Step-by-step explanation:

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