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The area of a circle of diameter d is(a) πd2(b) 2πd2(c) 1/4 πd2(d) 2πdQuestion 2. 1 cm2 =(a) 10 mm2(b) 100 mm2(c) 1000 mm2(d) 10000 mm2Question 3. 1 m2 =(a) 10 cm2(b) 100 cm2(c) 1000 cm2(d) 10000 cm2Question 4. 1 hectare =(a) 10 m2(b) 100 m2(c) 1000 m2(d) 10000 m2Question 5. 1 are =(a) 10 m2(b) 100 m2(c) 1000 m2(d) 10000 m2Question 6. The area of a square plot is 1600 m2. The side of the plot is(a) 40 m(b) 80 m(c) 120 m(d) 160 mQuestion 7. The area of a square is 121 m2. Its side is(a) 11 m(b) 21 m(c) 31 m(d) 41 mQuestion 8. The area of a square is 625 m2. Find its side(a) 25 m(b) 50 m(c) 125 m(d) 5 mQuestion 9. The area of a rectangular field is 250 m2. If the breadth of the field is 10 m, find its length.(a) 25 m(b) 50 m(c) 100 m(d) 125 mQuestion 10. The perimeter of a rectangle is 30 m. Its length is 10 m. Its breadth is(a) 5 m(b) 10 m(c) 15 m(d) 3 m |
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Answer» Answer: Q)The area of a circle of diameter d is (a) πd2 (b) 2πd2 (c) 1/4 πd2 (d) 2πd Answer :- Diameter of circle :- d so, RADIUS = d/2. hence , Area = πr² so, Area = πd²/4 so, option (C). is RIGHT option. Question 2.). 1 CM2 = (a) 10 MM2 (b) 100 mm2 (c) 1000 mm2 (d) 10000 mm2 Answer :- 1cm² = 100 mm² so, (B) option is right answer. Question 3. 1 m2 = Question 3. 1 m2 =(a) 10 cm2 Question 3. 1 m2 =(a) 10 cm2(b) 100 cm2 Question 3. 1 m2 =(a) 10 cm2(b) 100 cm2(c) 1000 cm2 Question 3. 1 m2 =(a) 10 cm2(b) 100 cm2(c) 1000 cm2(d) 10000 cm2 Answer :- 1m² = 10000cm² so , option (D) is right answer. 4. 1 hectare = 4. 1 hectare =(a) 10 m2 4. 1 hectare =(a) 10 m2(b) 100 m2 4. 1 hectare =(a) 10 m2(b) 100 m2(c) 1000 m2 4. 1 hectare =(a) 10 m2(b) 100 m2(c) 1000 m2(d) 10000 m2 ANSWER :- 1 hactare = 10000m² so, option (D) is right answer. |
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