AREA AND PERIMETER ASSESSENT LEVEL 1

If the PERIMETER of a rectangle is 22 cm and the breadth is 3 cm, calculate the length.

Answer=__________________________________________-

• 8cm

• 9cm

• 66cm

• 12 cm

Answer explanation

Perimeter of the rectangle = 22 cm
Breadth of the rectangle = 3c m
∴
Length of the rectangle = $\frac{Perimeter}{2}\ -\ Breadth$

= $\frac{22}{2}\ -\ 3\ =\ 11\ -\ 3\ =\ 8\ cm$

How much wire is needed to fence a square field of side 30m?

• 120m

• 200m

• 100m

• 90m

Answer explanation

Fencing is Perimeter

1 side of the square = 30m

$\therefore$ Perimeter of the square = Side x 4
Perimeter of the square = 30 m x 4 = 120m

Calculate the breadth of RECTANGLE, if the PERIMETER is 36 m and the length is 10 m.

Answer=___________________________________________

• 18 m

• 8 m

• 360 m

• 12 m

Answer explanation

Perimeter of the rectangle = 36 m
Length of the rectangle = 10m

$\therefore$ Breadth of the rectangle = $\frac{Perimeter}{2\ }\ -\ Length$
Breadth of the rectangle = $\frac{36}{2\ }\ -\ 10\ =\ 18\ -\ 10\ =\ 8$

• 20 cm

• $25\ cm^2$

• 15 cm

• 9 cm

Answer explanation

1 side of square = 5cm
∴ Perimeter of a square = 5cm x 4 = 20 cm

• 48cm

• 36 cm

• $48\ cm^2$

• $144\ cm^2$

Answer explanation

Area of a square = Side x Side
= 12 cm x 12 cm
= $144cm^2$

Calculate the perimeter of the square if its area is  $16m^2$   

• 16 m

• 8 m 

•  $20\ m^2$  

• 64m

Answer explanation

Area of the square =  $16m^2$  
∴ 1 side of the square =  $\sqrt{16\ \ }=\ 4$  
∴ 1 side of the square = 4 m
∴ Perimeter of the square = Side x 4 
                             = 4 m x 4 = 16 m

What is the perimeter and area of this square?

(click to show image)

• 20 cm; 25 $cm^2$

• 10 cm; 25 cm

• 10 $cm^2$ ; 25 cm

• 20 $cm^2$ ; 25 cm

Tags

CCSS.4.MD.A.3

CCSS.3.MD.C.7B

The formula for Area of a Square is

• Side x Side

• Side x 4

• Side x 6

• Perimeter  $\div$  4

Tags

CCSS.4.MD.A.3

CCSS.3.MD.C.7B

The formula for Perimeter of a Square is

• Side x Side

• Side x 4

• Side x 6

• Perimeter  $\div$  4

Tags

CCSS.4.MD.A.3

Find the area of this rectangle.

Area of a rectangle = L x B

•  $15cm^2$  
  

• $30\ cm^2$

• $50\ cm^2$

• $100\ cm^2$

Tags

area