Question

4. The perimeter of rectangular sheet is

100 cm.If the length is 35 cm, find its breadth.Also find the area.


5. Simplify these expressions and find their values if x = 3 , a = -1, b = -2.

3x -5 -x +9.


6. Subtract : - - -

a (b-5) from b (5-a)

7. The circumference of a circle is 31.4 cm.Find the radius and the area of the circle ? (

use π = 3.14)


8. A local cricket team played 20 matches in one season.It won 25℅ of them.How many

matches did they win ?


9. Express each of the following numbers using exponential form :

( I) 729. (ii) 512.


10. Construct ∆ABC, angle A=60° ,

angle B = 30° and AB = 5.8 cm.​

Answer 1

Answer:

4)  p=100

2(l+b)=100

2(35+b)=100

35+b=50

b=15  

A=l*b=35*15=525cm∧2

5) =3*3-5-3+9=9-8+9=10

6) =b(5-a)-a(b-5)=-2(5+1)+1(-2-5)=  -12-7=-19

7) p=2*3.14 *r

31.4=6.28*r

r=5cm

A=3.14*r^2 =3.14*5^2= 78.5cm^2

8) They win 25 matches not sure about this answer

10) this question is difficult to solve in laptop

so sorry for that, but i give you a hint to solve it  

first of all,

make a line AB which is 5.8cm than make 60 degree angle in A

and make 30 degree angle in B

you should sure about you have to make long line from A  

i hope it is useful for you friend.

Step-by-step explanation: