Test: Perimeter and Area - Class 7 MCQ

Area = Length × Width

Width = Area / Length
= 500 cm² / (25 cm)
= 20 cm

So option A is the correct answer. 

If the area of rectangle increases from 2 cm² to 4 cm² the perimeter will also increase.

Since it is given that perimeter of a square is 4m

We know that Perimeter of a square = 4a

 So, 4a = 4 

it implies that a = 1 

Area of a square =  a²

As a = 1 (as calculated above)

So area of a square = 1 m²

So option B is the correct answer. 

Area of a square = a² = (2 x 2) cm²
= 4 cm²

Area of rectangle =  L X B
= (3 x 2 ) cm²
= 6 cm²

Area of an equilateral triangle = root 3/4 .a²
= root 3/4 × (4)²
= 1.732 / 4 × 16
= 0.433 × 16
= 6.928 cm²

Since the area of  an equilateral triangle is more than area of a square and rectangle. So equilateral triangle encloses more area

So option A is the correct answer. 

Area of a rectangle is Length x Breadth

Here Length is 15 cm and Breadth is 6 m

We know that 1 m = 100 cm

So 6 m = 600 cm

So area of a rectangle =(15 x 600 ) cm²

                                            = 9000 cm²

The area of parallelogram is base × height

So option B is the correct answer. 

Since area of parallelogram is base × height

So to find Base of parallelogram the formula is = Area of parallelogram / Height

So option A is the correct answer. 

Since Area of parallelogram is base × height

So Height = Area of parallelogram / Base 

So option A is the correct answer. 

Area of parallelogram = Base × Height

We Know, Area of a triangle is bxh/2

where b is base and h is height

Given that base is 20cm  and height is 30cm

So Area of a triangle 20 cm x 30cm / 2

= 600 cm²/2     

= 300 cm²

So option A is the correct answer. 

We know Perimeter of a square is 4a 

= 4 x 7cm 

= 28 cm 

Perimeter = Sum of all the sides 

Perimeter of a triangle = a+b+c

Here a = 4cm , b = 6cm , c =10cm

(6+4+10)cm=20cm

So option A is the correct answer. 

The sum of the length of all the four sides of the quadrilateral is called the perimeter of the quadrilateral.

Here the lengths of all the four sides are 5 cm, 7 cm, 9 cm and 11 cm.

Therefore, perimeter of quadrilateral = 5 cm + 7 cm + 9 cm + 11 cm = 32 cm

So option A is the correct answer.                                        

Area = b×h = 4×3 = 12 cm².
Perimeter = 2(b) + 2(h) = 2(4) + 2(3) = 8 + 6 = 14 cm