App Logo

No.1 PSC Learning App

1M+ Downloads
The perimeter of a rectangle having area equal to 144cm and sides in the ratio 4:9 is.

A52cm

B56cm

C60cm

D64cm

Answer:

A. 52cm

Read Explanation:

Let 1 = 4x and b = 9x Area of rectangle = 1 x b 144 = 4x * 9x x² = 144/36 = 4 Perimeter of rectangle = 2 (1+b) = 2 (8 + 18) = 2 x 26 = 52cm


Related Questions:

രണ്ട് ഘനങ്ങളുടെയും ഉപരിതല വിസ്തീർണ്ണത്തിന്റെ അനുപാതം 81 ∶ 121 ആണെങ്കിൽ, ഈ രണ്ട് ഘനങ്ങളുടെയും വ്യാപ്തത്തിന്റെ അനുപാതം കണ്ടെത്തുക.
If the ratio of the base radii of a cylinder and a cone is 1 ∶ 2 and that of their heights is 2 ∶ 1, then what is the ratio of the volume of the cylinder to that of the cone?
The radius of the base of a cylinder is increased from 4 cm to 16 cm, but its curved surface area remains unchanged. If the initial height of the cylinder was 4 cm, what will be its new height?
1 ലിറ്റർ = _______ ക്യുബിക് സെന്റീമീറ്റർ.
If the perimeter of a rectangle and a square, each is equal to 80 cms, and difference of their areas is 100 sq. cms, sides of the rectangle are: