Advertisements
Advertisements
प्रश्न
A greeting card has an area 90 cm2. Between what two whole numbers is the length of its side?
Advertisements
उत्तर
| 1 | 90 |
| 5 | 45 |
| 3 | 9 |
| 3 | 3 |
| 1 |
Area of the greeting card = 90 cm2
(side)2 = 90 cm2
(side)2 = 2 × 5 × 3 × 3 = 2 × 5 × 32
`sqrt(("side")^2) = sqrt(2 xx 5 xx 3^2)`
side = `3sqrt(2 xx 5)`
side = `3sqrt(10)` cm
side = 3 × 3.2 cm
side = 9.6 cm
∴ Side lies between the whole numbers 9 and 10.
APPEARS IN
संबंधित प्रश्न
Find the number of digits in the square root of the following numbers (without any calculation).
144
Find the number of digits in the square root of the following numbers (without any calculation).
4489
Find the least number that must be subtracted from the following number so as to get a perfect square. Also find the square root of the perfect square so obtained.
402
Find the square of the following number by visual method:
99
Find the square root the following by long division method:
152547201
Find the square root of the following by long division method:
3915380329
Find the square root of: `(1764)/(2809)`
Squares of which of the following numbers will have 1 (one) at their unit’s place :
(i) 57
(ii) 81
(iii) 139
(iv) 73
(v) 64
Find the square root by long division method
418609
A General wishes to draw up his 7500 soldiers in the form of a square. After arranging, he found out that some of them are left out. How many soldiers were left out?
