4. Find the area of a triangle two sides of which are 18cm and 10cm and the perimeter is 42cm. Heron’s Formula Exercise 10.1 Previous Next Class 9 Heron’s Formula Miscellaneous Exercise 1. A traffic signal board, indicating ‘SCHOOL…
3. There is a slide in a park. One of its side walls has been painted in some colour with a message “KEEP THE PARK GREEN AND CLEAN” (see Figure). If the sides of the wall are 15 m, 11…
2. The triangular side walls of a flyover have been used for advertisements. The sides of the walls are 122 m, 22 m and 120 m (see Figure). The advertisements yield an earning of Rs 5000 per m2 per year.…
1. A traffic signal board, indicating ‘SCHOOL AHEAD’, is an equilateral triangle with side ‘a’. Find the area of the signal board, using Heron’s formula. If its perimeter is 180 cm, what will be the area of the signal board?…
16. A cylindrical tank of radius 10 m is being filled with wheat at the rate of 314 cubic metre per hour. Then the depth of the wheat is increasing at the rate of(A) (1 m^3/h) (B) (0.1 m^3/h)…
15. Show that height of the cylinder of greatest volume which can be inscribed in a right circular cone of height h and semi vertical angle α is one-third that of the cone and the greatest volume of cylinder is…
14. Show that the height of the cylinder of maximum volume that can be inscribed in a sphere of radius R is (frac{2R}{sqrt3}). Also find the maximum volume. Application of Derivatives Miscellaneous Exercise Previous Next Class 12 Application of Derivatives…
13. Let f be a function defined on [a,b] such that f’(x)>0, for all (xin(a,b)). Then prove that f is an increasing function on (a,b). Application of Derivatives Miscellaneous Exercise Previous Next Class 12 Application of Derivatives Miscellaneous Exercise 1.…
12. Show that the altitude of the right circular cone of maximum volume that can be inscribed in a sphere of radius r is (frac{4r}{3}). Application of Derivatives Miscellaneous Exercise Previous Next Class 12 Application of Derivatives Miscellaneous Exercise 1.…
11. Find the absolute maximum and minimum values of the function f given by (f(x)=cos^2{x}+sin{x}, xin[0,pi]). Application of Derivatives Miscellaneous Exercise Previous Next Class 12 Application of Derivatives Miscellaneous Exercise 1. Show that the function given by (fleft(xright)=frac{log{x}}{x}) has maximum…
