Which of the following features of Paramecium is not an advancement over Amoeba? The possession of
definite shape
cilia
oral groove
nucleus
Correct answer is D
No explanation has been provided for this answer.
In the diagram, PQST and QRST are parallelograms. Calculate the area of the trapezium PRST.
60cm2
50cm2
40cm2
30cm2
Correct answer is D
PR = 4 + 4 = 8 cm
Area of trapezium = \(\frac{1}{2} (a + b) h\)
= \(\frac{1}{2} (4 + 8) \times 5\)
= 30 cm\(^2\)
\(16\sqrt{3}m\)
\(4\sqrt{3}m\)
\(\frac{\sqrt{3}}{16}\)
\(\frac{16\sqrt{3}}{3}\)
Correct answer is D
\(sin 60 = \frac{8}{L} = 8 \div \frac{\sqrt{3}}{2}; L = \frac{8}{sin 60}=\frac{16}{\sqrt{3}}\)
When we rationalize gives \(\frac{16\sqrt{3}}{3}\)
040o
070o
110o
290o
Correct answer is D
< ABC = 40° (alternate angles)
\(\therefore\) < ACB = \(\frac{180° - 40°}{2}\)
= 70°
\(\therefore\) Bearing of A from C = 360° - 70°
= 290°
\(\frac{x}{sin 40^o}\)
\(\frac{x}{cos 40^o}\)
\(\frac{x}{2 sin 40^o}\)
\(\frac{x}{2 cos 40^o}\)
Correct answer is C
No explanation has been provided for this answer.
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