Question

X
उदाहरण 1.16. सिद्ध कीजिए -
x - a3 x²
63 - a 6² b = (xbc - a) (x - b) (x – c) (6-c)
² - a c² c​

Answer 1

Answer:

Step-by-step explanation:

GALAXY GLOBAL SCHOOL

Time : 1 hour Date: Std: VII Subject: Maths Marks:25

Q.1: Choose the correct alternative for each question and write correct option: (5)

1) The perimeter of a square with length 6 cm is______cm.

a) 12 b) 24 c) 30 d) 36

2) The perimeter of a rectangle with length 10 cm and breadth 8 cm __ cm.

a) 18 b) 36 c) 40 d) 80

3) There are ___ terms in 3x2

a) two b) three c) four d) five

4) The numerical coefficient of the term – 3x2

y

4

z

5

is ______

a) -3 b) -7x and 4x c) 4 d) 5

5) The side of a square having perimeter 48 cm is ___ cm.

a) 24 b) 16 c) 12 d) 6

Q.2:Fill in the blanks so as to make the following statements true: (5)

1)The perimeter of rectangle with length l and breath b is_____.

2) Area of a circle with radius r is____.

3)The algebraic expression of ‘subtracting 3from twice x’ is ____.

4) The simplified form 8x-6y+2x-4y is___.

5)The simplified form (2x-2y) + 5x-2x) is ____.

Q.3: Solve the following: (5)

1) Find the circumference of a circle with radius given below: 21 cm

2) Find the area of a circle with measures: i) radius=10.5 cm

3) Identify the numerical coefficient of each term of the following

expressions excluding contacts terms:

i) 4x+3y+5 ii) 9xy- 8x iii) 6x2

- 5x

Q.4: Solve the following: (any three out of four). (6)

1)Find the area of a square park whose perimeter 320m.

2) Simplify : (5x2

-2x+3)+(5x-8+3x2) +(9-x

2+2x)

3) What should be taken away from 3x2

-4y2+5xy+20 to obtain -x

2

-y

2+6xy+20?

4) The perimeter of a rectangle sheet is 100cm.if the length is 35 cm .find its

breadth .Also find the area.