Question

SECTION - A (1 mark each )
1. The square of 49 is
2. Find the smallest number by which the number 1296 must be divided to
obtain a perfect cube
( 6, 2, 4, 3)
3. The volume of a cube is 64 cm. The length of the cube is cm.
( 4, 8, 16, 6)
4. The area of a rhombus is 60cm?. One of the diagonal is 10cm. The other
diagonal is -------
( 6 cm, 12cm, 3cm, 24cm)
5. The volume of a room is 80m. The area of the floor is 20m². Find the height
of the room.
( 40m, 4m, 16m)
6. Express in standard form.
a) 0.0000048 b) 123000000
SECTION - B (2 marks each )
7. a) Find the square root of 1764 by prime factorisation method.
b) Find the square root of 31.36 by division method.
8. Evaluate :
-1
ali
-1
1
b)
5
8​

Answer 1

Answer:

Laughter increases the immune cells in your body and decreases the stress hormones. Also, it fights the infection-fighting antibodies. So, it helps in improving a person's resistance to power against the diseases. Laughter increases the blood in your body and also the functioning of blood vessels.

Answer 2

Answer:

I know all solutions.

Step-by-step explanation:

sorry for that ,I have not time for give your answers.