Advertisements
Advertisements
प्रश्न
The length and breadth of a rectangular plot are 5 × 105 and 4 × 104 metres respectively. Its area is ______
विकल्प
9 × 101 m2
9 × 109 m2
2 × 1010 m2
20 × 1020 m2
Advertisements
उत्तर
2 × 1010 m2
Explanation;
Hint:
Area of a rectangle = l × b = 5 × 105 × 4 × 104
= 5 × 4 × 105+4
= 20 × 109
= 2.0 × 10 × 109
= 2 × 1010 m2
APPEARS IN
संबंधित प्रश्न
Simplify.
`sqrt 7 - 3/5 sqrt 7 + 2 sqrt 7`
Divide and write the answer in simplest form.
`sqrt 54 ÷ sqrt 27`
Divide and write the answer in simplest form.
`sqrt 310 ÷ sqrt 5`
Simplify.
`4 sqrt 12 - sqrt 75 - 7 sqrt 48`
Simplify.
`2 sqrt 48 - sqrt 75 - 1/ sqrt 3`
Simplify the following using addition and subtraction properties of surds:
`5sqrt(3) + 18sqrt(3) - 2sqrt(3)`
Simplify the following using addition and subtraction properties of surds:
`4root(3)(5) + 2root(3)(5) - 3root(3)(5)`
Simplify the following using multiplication and division properties of surds:
`root(3)(27) xx root(3)(8) xx root(3)(125)`
If `sqrt(2)` = 1.414, `sqrt(3)` = 1.732, `sqrt(5)` = 2.236, `sqrt(10)` = 3.162, then find the values of the following correct to 3 places of decimals.
`sqrt(40) - sqrt(20)`
`4sqrt(7) xx 2sqrt(3)` =
