Question

the equivalent resistance of the following circuit is:
1) 0.25
2) 0.5
3) 0.75
4) 1
ohms

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Answer 1

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.