4NT Formulas

What is the area of a circle?

• πr²

• 2πr²

• 2πr

• πr

What is the area of a sector?

•  $\frac{\theta}{360^{\circ}}\times2\pi r^2$  

•  $\frac{\theta}{360^{\circ}}\times2\pi r$  

•  $\frac{\theta}{360^{\circ}}\times\pi r$  

•  $\frac{\theta}{360^{\circ}}\times\pi r^2$  

What is the volume of a prism?

• cross sectional area x height 

• area of triangle x height 

• area of square x height 

• area of rectangle x height 

What is the formula for arc length?

• $\frac{\theta}{360^{\circ}}\times\pi r^2$

• $\frac{\theta}{360^{\circ}}\times2\pi r$

• $\frac{\theta}{360^{\circ}}\times\pi r$

• $\frac{\theta}{360^{\circ}}\times2\pi r^2$

What is the total surface area a solid cube? 

• length x breadth 

• 2 x length x length 

• 4 x length x breath  

• 6 x length x length 

What is the circumference of circle?

• πr²

• 2πr²

• 2πr

• πr

What is the area of parallelogram?

• base x slant height

• base x perpendicular height

• base x height

• base x length

What is the volume of cylinder?

• $2\pi^2rh$
  

• $2\pi rh$
  

• $2\pi r^2h$
  

• $\pi r^2h$
  

What is the area of trapezium?

• $\frac{1}{2}$ x long side x perpendicular height
  

• $\frac{1}{2}$ x short side x perpendicular height
  

• $\frac{1}{2}$ x slant side x perpendicular height
  

• $\frac{1}{2}$ x sum of parallel sides x perpendicular height
  

What is the volume of the cubiod?

• breadth x breadth x breadth

• height x height x height

• length x breadth x height

• length x length x length