Advertisements
Advertisements
प्रश्न
Find the length of the side of the given square if area of the square is 625 square units and then find the value of x.
Advertisements
उत्तर
We have, a square having length of a side (4x + 5) units and area is 625 sq.units.
∵ Area of a square = (Side)2
(4x + 5)2 = 625
⇒ (4x + 5)2 = (25)2 ...[Taking square root both sides and neglecting (– ve) sign]
⇒ 4x + 5 = 25
⇒ 4x = 25 – 5
⇒ 4x = 20
⇒ x = 5
Hence, side = 4x + 5 = 4 × 5 + 5 = 25 units
APPEARS IN
संबंधित प्रश्न
Use a suitable identity to get the following products.
(2y + 5) (2y + 5)
Simplify (4m + 5n)2 + (5m + 4n)2
Using identities, evaluate 712
Using identities, evaluate (5.2)2
Expand `("x"+1/2)^2`
Use the formula to find the value.
54 × 46
Use a formula to multiply of (x - 5)(x + 5).
Expand: (51)2
The cost of a chocolate is Rs (x + y) and Rohit bought (x + y) chocolates. Find the total amount paid by him in terms of x. If x = 10, find the amount paid by him.
Verify the following:
(7p – 13q)2 + 364pq = (7p + 13q)2
