Activity 4. Among the pictures above, choose FIVE and fill up the table below on how
you apply proper etiquette and safety in using the facilities and equipment.
Facilities and
Equipment
Proper Etiquette and Safety Use
BEFORE
DURING
AFTER
Answers
Explanation:
Question 1.
It costs ₹3300 to paint the inner curved surface of a 10 m deep well. If the rate cost of
painting is of ₹30 per m2, find :
(a) inner curved surface area
(b) diameter of the well
(c) capacity of the well.
Solution:
Depth of well (h) = 10 m
Cost of painting inner curved surface is ₹30 per m2 and total cost is ₹3300
Surface Areas and Volumes Class 9 Extra Questions Maths Chapter 13 with Solutions Answers 9
Hence, inner curved surface area is 110 m2, diameter of the well is 2 × 1.75 i.e., 3.5 m and capacity of the well is 96.25 m3.
Question 1.
It costs ₹3300 to paint the inner curved surface of a 10 m deep well. If the rate cost of
painting is of ₹30 per m2, find :
(a) inner curved surface area
(b) diameter of the well
(c) capacity of the well.
Solution:
Depth of well (h) = 10 m
Cost of painting inner curved surface is ₹30 per m2 and total cost is ₹3300
Surface Areas and Volumes Class 9 Extra Questions Maths Chapter 13 with Solutions Answers 9
Hence, inner curved surface area is 110 m2, diameter of the well is 2 × 1.75 i.e., 3.5 m and capacity of the well is 96.25 m3.
Question 1.
It costs ₹3300 to paint the inner curved surface of a 10 m deep well. If the rate cost of
painting is of ₹30 per m2, find :
(a) inner curved surface area
(b) diameter of the well
(c) capacity of the well.
Solution:
Depth of well (h) = 10 m
Cost of painting inner curved surface is ₹30 per m2 and total cost is ₹3300
Surface Areas and Volumes Class 9 Extra Questions Maths Chapter 13 with Solutions Answers 9
Hence, inner curved surface area is 110 m2, diameter of the well is 2 × 1.75 i.e., 3.5 m and capacity of the well is 96.25 m3.
Question 1.
It costs ₹3300 to paint the inner curved surface of a 10 m deep well. If the rate cost of
painting is of ₹30 per m2, find :
(a) inner curved surface area
(b) diameter of the well
(c) capacity of the well.
Solution:
Depth of well (h) = 10 m
Cost of painting inner curved surface is ₹30 per m2 and total cost is ₹3300
Surface Areas and Volumes Class 9 Extra Questions Maths Chapter 13 with Solutions Answers 9
Hence, inner curved surface area is 110 m2, diameter of the well is 2 × 1.75 i.e., 3.5 m and capacity of the well is 96.25 m3.
Question 1.
It costs ₹3300 to paint the inner curved surface of a 10 m deep well. If the rate cost of
painting is of ₹30 per m2, find :
(a) inner curved surface area
(b) diameter of the well
(c) capacity of the well.
Solution:
Depth of well (h) = 10 m
Cost of painting inner curved surface is ₹30 per m2 and total cost is ₹3300
Surface Areas and Volumes Class 9 Extra Questions Maths Chapter 13 with Solutions Answers 9
Hence, inner curved surface area is 110 m2, diameter of the well is 2 × 1.75 i.e., 3.5 m and capacity of the well is 96.25 m3.
Question 1.
It costs ₹3300 to paint the inner curved surface of a 10 m deep well. If the rate cost of
painting is of ₹30 per m2, find :
(a) inner curved surface area
(b) diameter of the well
(c) capacity of the well.
Solution:
Depth of well (h) = 10 m
Cost of painting inner curved surface is ₹30 per m2 and total cost is ₹3300
Surface Areas and Volumes Class 9 Extra Questions Maths Chapter 13 with Solutions Answers 9
Hence, inner curved surface area is 110 m2, diameter of the well is 2 × 1.75 i.e., 3.5 m and capacity of the well is 96.25 m3.