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

HARD

9th CBSE

IMPORTANT

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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?

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Important Questions on Heron's Formula

HARD

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

HARD

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

HARD

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

HARD

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

HARD

9th CBSE

IMPORTANT

All in One Mathematics>Chapter 10 - Heron's Formula>Exam Practice>Q 9

Each side of an equilateral triangle is

2 x cm

If

x \sqrt{3} = 48

, then its area is

HARD

9th CBSE

IMPORTANT

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

An isosceles right angled triangle has area

8 {cm}^{2}

. Find the length of its hypotenuse.

HARD

9th CBSE

IMPORTANT

All in One Mathematics>Chapter 10 - Heron's Formula>Exam Practice>Q 11

If the sides of an equilateral triangle are tripled, then find its new area.

HARD

9th CBSE

IMPORTANT

All in One Mathematics>Chapter 10 - Heron's Formula>Exam Practice>Q 12

If the sides of a triangle are

13 cm, 14 cm

and

15 cm

. Then, find the area of the triangle.