Think of a number. Multiply it by 15. Add 45. Divide by 9. Subtract 11. Divide by
4. The result is 11. What is the number?
Which of the following statements is CORRECT?
A Length of a side of square and its area vary directly with each other.
B If one angle of a triangle is kept fixed then the measure of the remaining two angles vary inversely with each other.
C The area of circle and its diameter vary directly with each other.
D All of these
Given below are the steps of construction to construct a quadrilateral ABCD where AB = 3.5 cm, BC = 5.5 cm, CD = 2.4 cm, AD = 6.3 cm and ∠A = 45°. Which of the following steps is INCORRECT ?
Step I : Draw AB = 3.5 cm and construct ∠BAX = 45°.
Step II : With A as centre and radius AD = 6.3 cm, cut off AD = 6.3 cm along AX.
Step III : Join BD. With D as centre and radius 2.4 cm, draw an arc.
Step IV : With B as centre and radius 2.4 cm, draw an arc to cut the arc drawn in above step at C. Join BC, CD to obtain the required quadrilateral ABCD.
the correct answer should be answer D i.e. Step 4.