Question

write all the formula of
1. perimeter of square
2. area of square
3. perimeter of rectangle and area of rectangle
4. area of circumference
5. area of semicircle​

Answer 1

1. 4× side

2. side × side

3. perimeter- 2(l+b) area- lb

Answer 2

1=4×a

2=a^2

3= perimeter=2 (l+b) and area= l×b

4=

$\pi \times r ^{2}$

5=

$\pi \times r ^{2} \div 2$

where a is side of square

l is length, bis breadth

r is radius of circle.

hope it helps you. ..