MENSURATION

AREA OF CIRCLE IS ....

• $2\pi r$

• $\pi r^2$

• $\pi r$

AREA OF SECTOR OF A CIRCLE IS .....

• $\frac{X\degree}{360\degree}\times\pi r^2$

• $\frac{X\degree}{360\degree}\times2\pi r$

• $\frac{X\degree}{360\degree}\times\pi r^3$

AREA OF A TRIANGLE IS .....

• $\frac{1}{2\ }\times BASE\ \times HEIGHT\ \times LENGTH$

• $BASE\ \times HEIGHT$

• $\frac{1}{2}\times BASE\ \times HEIGHT$

THE PERIMETER OF THE REGULAR HEXAGON IS 21cm. CALCULATE THE LENGTH OF ONE SIDE.

• 3.5cm

• 216cm

• 4.2cm

Tags

CCSS.3.MD.D.8

THE DIAGRAM SHOWS A SECTOR OF A CIRCLE. CALCULATE THE LENGTH OF THE ARC AB.

• $12\pi$

• $4\pi$

• $36\pi$

CALCULATE THE PERIMETER OF THIS SHAPE

• 440cm

• 565cm

• 630cm