Heron's Formula

One side of an equilateral triangle is 4 cm.  The area of the triangle is _______

• 16 √3 cm²
• 8 √3 cm²
• 4 √3 cm²
• √3 cm²

Tags

CCSS.6.G.A.1

The perimeter of an equilateral triangle is 60 cm. Find the length of its sides.

• 30 cm
• 20 cm
• 15 cm
• 10 cm

Tags

CCSS.3.MD.D.8

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

Tags

CCSS.HSG.SRT.B.4

CCSS.HSG.SRT.C.6

CCSS.HSG.SRT.C.8

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

Tags

CCSS.HSG.CO.C.10

CCSS.HSG.SRT.B.4

Which of the following is Heron's Formula for finding area of triangle

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

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

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

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

Tags

CCSS.6.G.A.1

Find the area of a triangle whose sides are 9m, 12m and 15m

• 64 m²

• 48 m²

• 84 m²

• 54 m²

Tags

CCSS.6.G.A.1

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

Tags

CCSS.6.G.A.1

The area of a triangle is 120  $m^2$  , the base is   20 m 
find the height 

• 6 m

• 2400 m

• 60 m

• 12 m 

Tags

CCSS.6.G.A.1

Find the area of a triangle in which the base is 34 cm and the height is 9 cm

• 612 cm²

• 306 cm²

• 153 cm²

• 513 cm

Tags

CCSS.6.G.A.1

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

• $\sqrt{6\ }cm^2$

• $\sqrt{8}cm^2$

• $\sqrt{3}cm^2$

• $4\ cm^2$

Tags

CCSS.6.G.A.1