Day 187: CBSE Class 10 Maths
5 questions (8 parts). Try each one first, then open its answer.
Question 1 (case study, 4 parts)
Some Applications of Trigonometry. Asked once: 2026
Elevated water storage tanks are built to store and supply water to nearby colonies. In the diagram given above, AB is an elevated water tank and CD is a nearby multistorey building. The building is 54 metres away from the water tank. From a window (W) of the building, the angle of elevation of top of the tank is and angle of depression of its foot is .38 (i)Write a relation between d (the height of window) and y.38 (ii)Determine the value of h.38 (iii) (a)Determine height of the water tank.38 (iii) (b)Find the value of and height of the window above ground level.Question 2
Statistics. Asked once: 2026
6While calculating mean of a grouped frequency distribution, step deviation method was used . It was found that , and . The value of isTap an option to check your answer.
Question 3
Surface Areas and Volumes. Asked once: 2026
12A camping tent in hemispherical shape of radius 1.4 m, has a door opening of area . Outer surface area of the tent isTap an option to check your answer.
Question 4
Triangles. Asked once: 2026
23In the given figure, DEFG is a square. is right angle triangle with . Prove that .Question 5
Areas Related to Circles. Asked once: 2026
12Shown in the given figure is a circle with centre O. The area of the minor sector is . Area of circle is :Tap an option to check your answer.