All in One Mathematics>Chapter 10 - Heron's Formula>Challengers*>Q 8

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9th CBSE

IMPORTANT

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The lengths of three medians of a triangle are $9 cm, 12 cm$ and $15 cm$ . The area (in $sq cm$ ) of this triangle is

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Important Questions on Heron's Formula

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9th CBSE

IMPORTANT

All in One Mathematics>Chapter 10 - Heron's Formula>Exam Practice>Q 1

The perimeter of an equilateral triangle is $60 m$ . The area is

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9th CBSE

IMPORTANT

All in One Mathematics>Chapter 10 - Heron's Formula>Exam Practice>Q 2

The sides of a triangle are

25 cm, 17 cm

and

12 cm

. The length of the altitude on the longest side is equal to

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9th CBSE

IMPORTANT

All in One Mathematics>Chapter 10 - Heron's Formula>Exam Practice>Q 3

The area of equilateral triangle with

2 \sqrt{3} cm

side is

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9th CBSE

IMPORTANT

All in One Mathematics>Chapter 10 - Heron's Formula>Exam Practice>Q 4

A conical tent is made by stitching

10

triangular pieces of cloth of two different colours red and white alternatively, each piece measuring

10 cm, 20 cm

and

20 cm

, then how much cloth of red colour is required to make a conical tent?

Question Image

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9th CBSE

IMPORTANT

All in One Mathematics>Chapter 10 - Heron's Formula>Exam Practice>Q 5

The length of each side of an equilateral triangle having an area of

9 \sqrt{3} {cm}^{2}

is

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9th CBSE

IMPORTANT

All in One Mathematics>Chapter 10 - Heron's Formula>Exam Practice>Q 6

The base of an isosceles triangle is

24 cm

and its area is

192 sqcm

. Its perimeter is

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9th CBSE

IMPORTANT

All in One Mathematics>Chapter 10 - Heron's Formula>Exam Practice>Q 7

The edges of a triangular board are

6 cm, 8 cm

and

10 cm

. The cost of painting it at the rate of

9

paise per

{cm}^{2}

is

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9th CBSE

IMPORTANT

All in One Mathematics>Chapter 10 - Heron's Formula>Exam Practice>Q 8

The lengths of three sides of a triangle are

18 cm, 24 cm

and

30 cm

, then the height of corresponding to smallest side is