Question

1. Write in decimal form
16
2. Write the property of interior angles and show the interior angle in figure.
3. Find the cube root of -343.
4. Expand (198)
5. Write the following statements using the symbol of variation..
1. circumference of circle is directly proportional to its radius ®.
2. The wave length of sound (L) and its frequency (f) are in inverse variation.
6.Draw a square ABCD with side 3.3cm.​

Answer 1

Answer:

1.6

2). Properties. The sum of the internal angle and the external angle on the same vertex is 180°. The sum of all the internal angles of a simple polygon is 180(n–2)° where n is the number of sides.

3). So, -7 x -7 x- 7 =+(- 343). Here, -343 is the cube of 7, and 7 is the cube root of -343.

4). 198=200-2

=> 200^3 - 2^3 - 3 *(200)^2*2+ 3

=> 8000000. - 8-240000 +5400

=>7765392.

5). circumfence of circle=

$2\pi \: r$

L directly proportional to 1/f

6).

Step-by-step explanation:

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