Herons Formula

What in the area of an equilateral triangle with side 2 cm?

• $\sqrt{6\ }cm^2$

• $\sqrt{8}cm^2$

• $\sqrt{3}cm^2$

• $4\ cm^2$

Tags

CCSS.6.G.A.1

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

Tags

CCSS.6.G.A.1

4. The sides of a triangle are 3 cm, 5 cm and 6 cm. What is its area?

• $2\sqrt{3}cm^2$

• $4\sqrt{14}cm^2$

• $5\sqrt{12}cm^2$

• $2\sqrt{5}cm^2$

Tags

CCSS.6.G.A.1

If the perimeter of an equilateral triangle is 60 cm, then what is its area?

• $100\sqrt{2}cm^2$

• $200\sqrt{2}cm^2$

• $100\sqrt{3}cm^2$

• $200\sqrt{3}cm^2$

Tags

CCSS.HSG.SRT.D.9

The sides of a triangle are 15 cm, 17 cm and 8 cm. What is its area?

• $20\ cm^2$

• $40\ cm^2$

• $60\ cm^2$

• $80\ cm^2$

Tags

CCSS.6.G.A.1

The sides of a triangle are in the ratio of 3 : 4 : 5. If its perimeter is 36 cm, then what is its area?

• $32\ cm^2$

• $54\ cm^2$

• $67\ cm^2$

• $72\ cm^2$

Tags

CCSS.6.G.A.1

Which option is INCORRECT ?

Heron's Formula is used to find the area of triangle when

• Three sides are given

• Two sides & perimeter is given

• Height is given

• Two sides & semi perimeter is given

Tags

CCSS.6.G.A.1

If the sides of a triangle are 8, 8, and 8, what is the area?

• 8

• 15.58

• 27.71

• 62.91

Tags

CCSS.6.G.A.1