Question
Lactometer is used to measure _____ in
milk.ÂSolution
Lactometer is a hydrometer instrument that is used to check for the purity of milk by measuring milk's density; usually it works on the principle of gravity of milk.
If two triangles XYZ and ABC are congruent, then which of the following statement(s) is/are true?
I. XY = AB
II. ∠X = ∠A
- Find the vertical height from a vertex to the base of an equilateral triangle with a side measuring 12√3 cm.
If two triangles JKL and MNO are congruent, then which of the following statement(s) is/are true?
I. JK = MN
II. ∠JKL = ∠MNO
In a right-angled triangle, the perimeter is 60 cm. If the base is 12 cm and the height is 16 cm, find the length of the hypotenuse.
- Calculate the area of a triangle whose base is 19.5 cm and the height corresponding to it is 13.7 cm.
Find the length of AB, if ΔABC ~ ΔRQP and BC = 14 cm, QP = 7 cm and RQ = 5 cm.
- Find the distance between the parallel sides of a trapezium whose area is 315 cm² and the lengths of the parallel sides are 15 cm and 21 cm respectively.
The area of a triangle is 216 cm² and the ratio of its sides is 9: 12: 15. What is the perimeter of the triangle?
In triangle ABC, DE is drawn parallel to BC, intersecting AB at D and AC at E. If AD : DB = 2 : 1 and area of triangle ADE is 24 cm², find:
(i) ...
- What is the average of the first eight triangular numbers?
