Question

Q7. Find the curved surface area of a cone whose height is 16 cm and its
radius is 12 cm.
5+6
Q8. Simplify
5-6
09.
Find the volume of a right circular cylinder if the radius of its base
and height are 7cm and 15cm respectively.
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Q10. Find three rational numbers between -2 and 5
Q11. The volume of a cone is 18480cm, if the height of the cone is 40cm
Find the radius of its base.
Q12 TO Q13, EACH CARRIES 3 MARKS
Q12. The diameter of a roller 120cm long is 84cm. If it takes 500 complete
revolutions to level a playground, determine the cost of levelling it at
at the rate of 30 paise per square metre.
4-75
Q13. Simplify:
4+5
4-15
+
4+15
Q14 TO Q15,EACH CARRIES 4 MARKS
Q14. Represent the following on number line:(a) V6.3 (b)75
Q15. A dome of a building is in the form of a hemisphere. From inside it
was white washed at the cost of Rs 498.96. If the cost of white
washing is Rs 2 per square metre, find the inside surface area of the
dome and the volume of the air inside the dome.​

Answer 1

Answer:

mmmmmm its pretty hard which class I will include answer again