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- Multiple ChoicePlease save your changes before editing any questions.One side of an equilateral triangle is 4 cm. The area of the triangle is _______16 √3 cm
^{2}8 √3 cm^{2}4 √3 cm^{2}√3 cm^{2} - Multiple ChoicePlease save your changes before editing any questions.The perimeter of an equilateral triangle is 60 cm. Find the length of its sides.30 cm20 cm15 cm10 cm
- Multiple ChoicePlease save your changes before editing any questions.
The length of equal sides of an isosceles right triangle is √2 cm. Find the length of its hypotenuse

4 cm

8 cm

2 cm

None of the above

- Multiple ChoicePlease save your changes before editing any questions.
**Let a,b,c are the sides of a triangle.Then Semi perimeter S is**$\frac{a\ +\ b\ +\ c}{2}$

$\frac{a\ +\ b\ +\ c\ }{3}$

a + b + c

abc

- Multiple ChoicePlease save your changes before editing any questions.
Which of the following is Heron's Formula for finding area of triangle

$A=\sqrt{s\left(s-a\right)\left(s-b\right)\left(s-c\right)}$

$A=\sqrt{s\left(s+a\right)\left(s+b\right)\left(s+c\right)}$

$A=\sqrt{\left(s+a\right)\left(s+b\right)\left(s+c\right)}$

$A=\sqrt{s\left(s\times a\right)\left(s\times b\right)\left(s\times c\right)}$

- Multiple ChoicePlease save your changes before editing any questions.
Find the area of a triangle whose sides are 9m, 12m and 15m

64 m

^{2}48 m

^{2}84 m

^{2}54 m

^{2} - Multiple ChoicePlease save your changes before editing any questions.
To which of the following triangles, Heron's formula can be used to find the area

Scalene triangle

Equilateral triangle

Isosceles triangle

All the above

- Multiple ChoicePlease save your changes before editing any questions.
The area of a triangle is 120 $m^2$ , the base is 20 m

find the height6 m

2400 m

60 m

12 m

- Multiple ChoicePlease save your changes before editing any questions.
Find the area of a triangle in which the base is 34 cm and the height is 9 cm

612 cm

^{2}306 cm

^{2}153 cm

^{2}513 cm

- Multiple ChoicePlease save your changes before editing any questions.
What is the area of an equilateral triangle with side 2 cm?

$\sqrt{6\ }cm^2$

$\sqrt{8}cm^2$

$\sqrt{3}cm^2$

$4\ cm^2$

- Multiple ChoicePlease save your changes before editing any questions.What is the purpose of Heron's formula?To find the angle measure in a triangle.To find the area of a non-right triangle.To find the side length of a triangle.To find the height of a triangle.
- Multiple ChoicePlease save your changes before editing any questions.How many values must you have to use Heron's formula?1234
- Multiple ChoicePlease save your changes before editing any questions.
The base of an isosceles triangle is 16 cm and it's area is 48 cm

^{2}. The perimeter of the triangle is41 cm

36 cm

48 cm

324 cm

- Multiple ChoicePlease save your changes before editing any questions.
The area of equilateral triangle is $36\sqrt{3}cm^2$ . It's perimeter is...

36 cm

$12\sqrt{3}cm$

24 cm

30 cm

- Multiple ChoicePlease save your changes before editing any questions.
If the sides of a triangle are 3, 4, and 5, what is the semi-perimeter?

3

6

9

12