Question 7 :
The distance between earth and sun is 150 million kilometres which can be written in exponential form as _______.

Question 11 :
Diameter of cylinder A is 7 cm and its height is 14 cm. Diameter of cylinder B is 14 cm and its height is 7 m. Find the volume of both the cylinders.

Question 12 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1cedff59b460d7261f0c3.JPG' /> In the above figure, the surface area of cylinder is ______.

Question 13 :
A rectangular piece of paper 11 cm $\times$ 4 cm is folded without overlapping to make a cylinder of height 4 cm. What is the volume of this cylinder?

Question 14 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1d018f59b460d7261f279.png' /> From the above figure, The shape of a garden is rectangular in the middle and semi circular at the ends as shown. Find the perimeter of this garden [Length of rectangle is 20-(3.5 + 3.5) metres].

Question 15 :
A parallelogram is divided into two congruent triangles by drawing a diagonal across it. Can we divide all trapeziums into two congruent triangles?

Question 16 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1d01ef59b460d7261f281.png' /> From the figure given above, Top surface of a raised platform is in the shape of a regular Octagon as shown in the figure. Find the area of the octagonal surface.

Question 17 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1cecbf59b460d7261f0a6.png' /> In the above image, area of the figure is ?