4.55 litres
7.50 litres
8.10 litres
9.55 litres
Correct answer is A
Vol of a cubiod = L x b x h
v = 13cm x 10cm x 70cm
= 9100cm
Since it is half-filled = \(\frac{9100}{2}\)cm
= 4550cm
4550cm \(\to\) 4.55 litres
10 cm
14 cm
16 cm
20 cm
Correct answer is A
Volume of a cylinder = \(\pi r^2h\)
40\(\pi cm^3\) = \(\pi. 4^2h\)
40\(cm^3\) = 16h
h = 2.5cm/sec
In 4 seconds, 2.5cm x 4
= 10cm
29\(^o\)
57\(^o\)
65\(^o\)
115\(^o\)
Correct answer is B
lac = \(\frac{\theta}{360}\) x 2\(\pi\)r
7.5 = \(\frac{\theta}{360}\) x 2 x \(\frac{22}{7}\) x 7.5
7.5 = \(\frac{330\theta}{2520}\)
\(\theta\) = \(\frac{7.5}{0.1309}\)
\(\theta\) = 57.29
\(\theta\) = 57 \(^o\)
Simplify; 3x - (p - x) - (r - p)
2x - r
2x + r
4x - r
2x - 2p - r
Correct answer is C
3x - (p - x) - ( r - p) = 3x - p + x - r + p = 4x - r
Solve: - \(\frac{1}{4}\) < \(\frac{3}{4}\) (3x - 2) < \(\frac{1}{2}\)
-\(\frac{5}{9}\) < x <\(\frac{8}{9}\)
-\(\frac{8}{9}\) < x <\(\frac{7}{9}\)
-\(\frac{8}{9}\) < x <\(\frac{5}{9}\)
-\(\frac{7}{9}\) < x <\(\frac{8}{9}\)
Correct answer is A
\(\frac{3}{4}\) (3x - 2) < \(\frac{1}{2}\); \(\frac{3}{4}\) (3x - 2) > - \(\frac{1}{4}\)
3(3x - 2) < 2; 3(3x - 2) > -1
9x - 6 < 2; 9x - 6 > -1
9x < 8; 9x > 5
x < \(\frac{5}{9}\); x > \(\frac{8}{9}\)