Question

give me first please ​

Answer 1

Answer:

the first one is 105 metre square

The second one is 15 cm square

Step-by-step explanation:

1st question:- add the length 7+7+7 = 21

Find the total area of the big rectangle, 21 ×6 = 126

subtract the area of the small rectangle

area of small rectangle = 21

Therefore, 126-21 = 105 m square

2nd question:- separate all the five sections,

first section area = 5×1 = 5cm square

second section area = 4×1 = 4 cm square

and so on...

therefore, 5+4+3+2+1 = 15 cm square.

This is a shortcut technique

hope it helps