Reliance Jio Geometry Quiz 1

Area of Rectangle = 12\times 9 = 108 cm^{2}

We know Curved Surface Area of cylinder = 2\pi\times r\times  h

 

Curved Surface Area of First cylinder = 2 \pi \times 3\times  h

Curves surface Area of Second cylinder =  2 \pi \times 4\times  h

Ratio = 3:4

Let Side of Square  = a

Area = a^{2}

Then Side of New Square  = 1.25a

New Area = (1.25a)^{2} = 1.5625a^{2}

Change in Area =  1.5625(a)^{2} - a^{2}  = 0.5625

% change in Area = \frac{0.5625a^{2}}{a^{2}} \times 100 = 56.25%

 

sum of any 2 sides of a triangle must be greater than the measure of the third side.

So 6 , 8 ,10

 

Sum of interior angles of a polygon =  (n-2) \times 180^{\circ} = (5-2) \times 180^{\circ} = 540^{\circ}

Area of trapezium = \frac{1}{2}\times \text{sum of parallel sides}\times height

= \frac{1}{2}\times (60 +80) \times 20 m^{2}

= 1400 m^{2}

 

Total volume of cubes = 6^{3} + 8^{3} + 10^{3} = 216 +512 +1000 = 1728 cm^{3}

 

Side of new cube = \sqrt[3]{1728}cm^{3} = 12 cm

 

Let side of square = a

Diagonal of square = a\sqrt{2}= 50\sqrt{2}

a = 50 m

Let the angles of the triangle be 4x^{\circ}, 6x^{\circ}, 8x^{\circ}

 

4x + 6x + 8x = 180

 

18x= 180

 

⇒x=10

 

Largest angle = 8x = 8 \times 10 = 80^{\circ}

Total area of the four walls = 2(l + b)  h = 2(10 + 15) 20 = 1000 m^{2}

So, Total cost = 1000 x 5 = Rs. 5000