Advertisements
Advertisements
प्रश्न
Each side of a square is 7 m. If its each side be increased by 3 m, what will be the increase in its area.
Advertisements
उत्तर
Each side of square = 7 m
∴ Area of square = (side)²= (7m)²
= 7m x 7m = 49m²
∵ Side increased by 3 m
∴ Total length of side will be = 3 m + 7 m = 10m
∴ Area of square = (10 m)²= 10m x 10 m = 100 m²
∴ Increase in area = 100 m² – 49 m² = 51 m²
APPEARS IN
संबंधित प्रश्न
In the below Fig, ABC and ABD are two triangles on the base AB. If line segment CD is
bisected by AB at O, show that ar (Δ ABC) = ar (Δ ABD)
Find the area of a rectangle whose length and breadth are 25 m and 16 cm.
Find the area of a square, whose side is: 4.1 cm.
The table given below contains some measures of the rectangle. Find the unknown values.
| Length | Breadth | Perimeter | Area |
| ? | 15 cm | 60 cm | ? |
Cheggu’s wife asked him to make a circle with the wire. She knew it had an area of 800 square meters.
- Why did Cheggu not choose a rectangle? Explain.
Each line gives a story. You have to choose the question which makes the best story problem. The first one is already marked.
- The cost of one book is Rs 47. Sonu buys 23 books.
a) How much money does she have? b) How much money does she pay for the books? c) What is the cost of 47 books?
Whose footprint is larger - yours or your friend’s?
Find the area of the following figure by counting squares:
Find the area of the following figure by counting squares:
Find the area of the following figure by counting squares:
