Question
Construct the 120° angle, using ruler and a pair of compass only.
✓
Answer
Steps of construction:
To construct an angle of 120°.
To construct an angle of 120°.
- With centre O on the line OA, draw an arc to cut this line at C.
- With C as a centre, drawn the same size arc which cuts the first arc at point D.
- With D as a centre, draw one more arc of same size which cuts the first arc at E.
- Join OE and produce it upto point B. Then, ∠AOB = 120°.
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→The ratio of the number of students in class VI of three schools P, Q and R is $\frac{1}{6}: \frac{1}{8}: \frac{1}{9}$ respectively. The total number of students of class VI in all the three schools is 725.
Q.1. How many students are there in class VI of school P?
(a) 275$\quad$(b) 300$\quad$(c) 330$\quad$(d) 280
Q.2. How many students are there in class VI of school Q?
(a) 240$\quad$(b) 235$\quad$(c) 265$\quad$(d) 225
Q.3. How many students are there in class VI of school R?
(a) 200$\quad$(b) 225$\quad$(c) 185$\quad$(d) 240
Q.4. If the number of students studying in each of these schools is increased by $16 \%$, $12 \%$ and $20 \%$ respectively, then the new ratio of number of class VI students in schools P, Q and R is :
(a) $21: 17: 26$$\quad$(b) $29: 21: 20$$\quad$(c) $19: 21: 20$$\quad$(d) $9: 11: 7$
→Q.1. How many students are there in class VI of school P?
(a) 275$\quad$(b) 300$\quad$(c) 330$\quad$(d) 280
Q.2. How many students are there in class VI of school Q?
(a) 240$\quad$(b) 235$\quad$(c) 265$\quad$(d) 225
Q.3. How many students are there in class VI of school R?
(a) 200$\quad$(b) 225$\quad$(c) 185$\quad$(d) 240
Q.4. If the number of students studying in each of these schools is increased by $16 \%$, $12 \%$ and $20 \%$ respectively, then the new ratio of number of class VI students in schools P, Q and R is :
(a) $21: 17: 26$$\quad$(b) $29: 21: 20$$\quad$(c) $19: 21: 20$$\quad$(d) $9: 11: 7$