Which of the following is not irrational?
√2
√3
√4
√5
Rationalized form of the denominator of
(5 + 3√2)/7
(5 - 3√2)/7
5 - 3√2
None of these
√11 + √5
11 + √5
√(11 + 5)
(√7 + √5) (√7 - √5) =
24
4
2
12
(2 + √5)2 =
10 + √5
9 + 4√5
9 - 4√5
20
A, B, C are three points such that AB = √50 cm, BC = √98 cm, AC = √288 cm. Then they are the points on
Triangle
Square
Parallelogram
Straight line
7√3 × 8√3 =
56√3
168
45
18
√45 + √80 =
7√5
12√5
√2 is a/an
natural number
rational number
irrational number
none of these
For the below right angled triangle, which of the following is true
The perimeter and area are both irrational
The perimeter is rational but the area is irrational
The perimeter is irrational but the area is rational
The perimeter and area both are rational