9th
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Mathematics

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Anuradha Bairagya

4 years

Mathematics

9th

grade

Heron's formula class 9

Anuradha Bairagya

44
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10 questions

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1. Multiple Choice
2 minutes
1 pt
1. The area of a triangle is 150 sq. cm. and its sides are in the ratio 3 : 4 : 5. What is its perimeter?
10 cm
40 cm
35 cm
60 cm
2. Multiple Choice
2 minutes
1 pt
What in the area of an equilateral triangle with side 2 cm?
$\sqrt{6\ }cm^2$
$\sqrt{8}cm^2$
$\sqrt{3}cm^2$
$4\ cm^2$
3. Multiple Choice
2 minutes
1 pt
3. What is the length of each side of an equilateral triangle having an area of
$4\sqrt{3}\ cm^2$
4 cm
5 cm
3 cm
6 cm
4. Multiple Choice
2 minutes
1 pt
4. The sides of a triangle are 3 cm, 5 cm and 6 cm. What is its area?
$2\sqrt{3}cm^2$
$4\sqrt{14}cm^2$
$5\sqrt{12}cm^2$
$2\sqrt{5}cm^2$
5. Multiple Choice
2 minutes
1 pt
Length of one of the equal sides of an isosceles triangle is 4 cm. If its perimeter is 14 cm, then what is its area?
$7\sqrt{3}cm^2$
$3\sqrt{7}cm^2$
$7\sqrt{7}cm^2$
$21cm^2$
6. Multiple Choice
2 minutes
1 pt
If the perimeter of an equilateral triangle is 60 cm, then what is its area?
$100\sqrt{2}cm^2$
$200\sqrt{2}cm^2$
$100\sqrt{3}cm^2$
$200\sqrt{3}cm^2$
7. Multiple Choice
2 minutes
1 pt
The sides of a triangle are 15 cm, 17 cm and 8 cm. What is its area?
$20\ cm^2$
$40\ cm^2$
$60\ cm^2$
$80\ cm^2$
8. Multiple Choice
2 minutes
1 pt
The sides of a triangle are in the ratio of 3 : 4 : 5. If its perimeter is 36 cm, then what is its area?
$32\ cm^2$
$54\ cm^2$
$67\ cm^2$
$72\ cm^2$
9. Multiple Choice
2 minutes
1 pt
The area of triangle with given two sides 18 cm and 10 cm respectively and perimeter equal to 42 cm is:
$20\sqrt{11}cm^2$
$19\sqrt{11}cm^2$
$22\sqrt{11}cm^2$
$21\sqrt{11}cm^2$
10. Multiple Choice
30 seconds
1 pt
The sides of a triangle are in the ratio 12: 17: 25 and its perimeter is 540 cm. The area is:
1000 cm²
5000 cm²
9000 cm²
8000 cm²
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Heron's formula class 9

9thgrade

Mathematics

Mathematics

9th

grade

Heron's formula class 9

44 plays

10 questions

Introducing new Paper mode

9th
grade

44
plays