Question

Solve the following questions:
Substitute the values if a=1 ,b= -2 and c= 4
1:) a-2b
2:) c-a
3:) b-30
4:) Find the area and perimeter of a square whose length = 12 cm and breadth 10
cm.​

Answer 1

Answer:

Step-by-step explanation:

1. a - 2b = 1-2 × -2 = 1+4 =5

2. c -a = 4 - 1= 3

3. b-30 = -2 -30 = - 32

4.  this is not a square this is rectangle....

area = l×b= 12× 10= 120 cm2

perimeter= 2(l+b) = 2(12+10)= 2× 22= 44 cm

Answer 2

Step-by-step explanation:

i hope my answer is correct..