Area and Perimeter of Figures

What is the area of a circle with a radius of 20 cm? Take $\pi$  = 3.14

• 314

• 5024

• 1256

• 125.6

Which one is the formula in finding the area of a triangle?

•  $2bh$  

•  $2\left(l+b\right)$  

•  $\frac{1}{2}bh$  

•  $\pi r2$  

Find the area of the figure in cm2 in 1 or 2 decimal place/s. take  $\pi$  = 3.14. No need to write the unit.

(a)  

What is the area of the whole figure in cm2? Write your answer rounded off to whole number. No need of units. Take  $\pi$  = 3.14

(a)  

What is the perimeter of the whole figure in cm? Write your answer rounded off to whole number. No need of units. Take  $\pi$  = 3.14

(a)  

Given that the radius of the quadrant is 10cm, how much is its perimeter in cm?  Take  $\pi$  = 3.14.

• 62.8 cm

• 7.85 cm

• 15.7 cm

• 35.7 cm

 Given that the circumference of a circle is equal to 125.6 cm, how much is its radius? Take  $\pi$  = 3.14.

• 20 cm

• 40 cm

• 10 cm

• 80 cm

Given the perimeter of a square is equal to 76 cm, find its area in cm2. No need to write the units.

(a)  

In the figure, AB= 20 m, BC = 21 m, AD = 10 m and DE= 10.5 m. How much is the area of the shaded region?

• 210 m2

• 157.5 m2

• 52.5 m2

• 420.5 m2

What is the perimeter in cm in 1 decimal place? No need to write the unit.

(a)