Math, asked by rizwanafatima412, 3 days ago

1) π = ………………. A) 22/9 B) 22/7 C) 219/7 D) 22/3 2) Circumference of circle = ………………… A) 2πr B) πr C) πr2 D) πr2. 3)Each exterior angle of an equilateral triangle is ……………. A) 70° B) 60° C) 100° D) 120° 4)Number of diagonals in a Quadrilateral is ……………… A) 2 B) 4 C) 3 D) 1 5) Area of Trapezium = A) 1/2 (a + b) B) 1/2 h (a + b) C) a+b/4 D) 14/ h (a + b) 6)Area of circle = …………………. A) πr B) 2πr C) πr² D) πr² 7)Perimeter of Semi circle is ………………… A) πr² B) πr C) r + π D) πr 8) Area of sector is ……………….. A) lr B) lr2 C) l+r2 D) lr/2 9) Central angle of circle is ……………….. A) 160° B) 300° C) 360° D) 180° 10) Diameter of a circle is 8.2 cm then its radius is ……………. cm A) 4.5 B) 5.4 C) 4.1 D) 3.2 11) Sum of the angles in a triangle is ……………….. A) 130° B) 170° C) 160° D) 180° 12) Side of a square is 7 cm then its area is ………………. cm2 A) 49 B) 60 C) 80 D) 94. 13) In a circle d = 28 cm then A = ……………… cm2 A) 216 B) 161 C) 606 D) 616. 14) In a Quadrilateral d = 6 cm, h1 = 5 cm, h2 = 3 cm then A = ……………….. cm2 A) 16 B) 18 C) 24 D) 19 15) Area of square is 1225 cm2 then its side is ……………… cm A) 25 B) 15 C) 45 D) 35 can anyone answer it? ​

Answers

Answered by Anonymous
11

Solution 1

\implies \rm \: \pi  =  \dfrac{22}{7}

Option B) 22/7 is correct

Explanation

➡The Pi refers to as mathematical constant and the value of pi is 22 /7

Solution 2

 \rm\implies Circumference \:  of  \: circle  =  2 \: \pi \: r

Option A) 2πr is correct

Explanation

In this formula of Circumference of circle

  • π = constant pi
  • r = radius of the circle

Solution 3 ༄

 \rm\implies \: Each \:  exterior  \: angle  \: of  \: an \:  equilateral \:   \: triangle \:  is  \: 60 \degree

Option B) 60° is correct

Solution 4

 \rm\implies \: Number \:  of \:   \: diagonals \:  in \:  a \:  Quadrilateral \:   \: is \:  2

Option A) 2 is correct

Learn - more

  • Number of Sides in Quadrilateral is 4

Solution 5

 \rm\implies Area  \: of \:  Trapezium =  \dfrac{1}{2} \: h \: (a + b)

Option B) 1/2 h (a + b) is correct

Explanation

In this formula of area of trapezium

  • a and b = bases of trapezium,

  • h = height (the perpendicular distance between a and b)

Solution 6

 \rm\implies Area  \: of \:  circle = \: \pi \:  {r}^{2}

Option C) πr² is correct

Explanation

In this formula of area of circle

  • π = constant pi

  • r² = radius squared
Answered by Ɍɛղgɔƙմ
7

Answer:

Thanks for your question...

Your required answer :

1)

  • \pi =  \frac{22}{7}
  • So option B is the correct answer.

2)

  • Circumference of circle = 2πr
  • So option A is the correct answer.

3)

  • Each exterior angle of an equilateral triangle is = 60°
  • So option B is the correct answer.

4)

  • Number of diagonals in a Quadrilateral is = 2
  • So option A is the correct answer.

5)

  • Area of Trapezium =
  •  \frac{1}{2}  \times h(a + b)
  • So option B is the correct answer.

6)

  • Area of circle = πr²
  • So option C is the correct answer.

7)

  • Perimeter of Semi circle is = πr
  • So option B is the correct answer.

8)

  • Area of sector is = lr²
  • So option B is the correct answer.

9)

  • Central angle of circle is = 360°
  • So option C is the correct answer.

10)

  • Diameter of a circle is 8.2 cm then its radius is = 4.1 cm
  • So option C is the correct answer.

11)

  • Sum of the angles in a triangle is = 180°
  • So option D is the correct answer.

12)

  • Side of a square is 7 cm then its area is = 49 cm²
  • So option A is the correct answer.

13)

  • In a circle d = 28 cm then A = 616 cm²
  • So option D is the correct answer.

14)

  • In a Quadrilateral d = 6 cm, h1 = 5 cm, h2 = 3 cm then A = 24 cm
  • So option C is the correct answer.

15)

  • Area of square is 1225 cm2 then its side is = 35
  • So option D is the correct answer.

Brainliest Please

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