Question

Every JNV of INDIA has a beautiful Mathematical Garden. In one of the JNVs, in mathematical garden, there is a wall of a room having a window and a door is displayed in a rectangular sheet with the following dimensions as shown below:(i) What is the algebraic expression for the area of the wall to be painted?


(A) 5x (2x +1) sq. units (B) 10x (2x +1) sq. units

(C) (25x2 +10 ) sq. units (D) ( 20x2

- 10) sq. units

(ii) Choose the correct expression for the area of door-


(A) 9x2

sq. units (B) 15x2

sq. units

(C) 10x2

sq. units (D) 3x2

sq. units

(iii) Which of the following expression represents the perimeter of the

(A) 3 (5x - 1) units (B) 5 (5x - 1) units

(C) 4(5x+1) sq. units (D) none of these.

(iv) Which of the following expression represents the perimeter of the window?


(A) 6x units (B) 8x units

(C) 7x units (D) 9x units

(v) If it costs Rupees 25/- per square meter to paint the wall then the algebraic

expression for the cost of painting the given wall is-


(A) 250x (2x + 1) (B) 250 x2 + 10

(C) 125x (x + 1) (D) 500x2

– 250​

Answer 1

Answer:

i ) C

ii) D

iii) B

iv) A

v) A

Step-by-step explanation:

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Answer 2

Answer:

a) c

b) d

c) b

d) a

e) a

Step-by-step explanation:

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