CBSE Class 10 Maths (Standard) 2023 · Paper 30/2/1 · Question 36
In an annual day function of a school, the organizers wanted to give a cash prize along with a memento to their best students. Each memento is made as shown in the figure and its base ABCD is shown from the front side. The rate of silver plating is Rs 20 per cm. Here is the centre of the circle of radius cm, , and cm. Based on the above, answer the following questions:
- (i)What is the area of the quadrant ODCO?[1]
- (ii)Find the area of .[1]
- (iii)(a)What is the total cost of silver plating the shaded area ABCD?[2]
- (iii)(b)What is the length of arc CD?[2]
Answer
(i) cm; (ii) cm; (iii)(a) Cost ; (iii)(b) Arc cm.
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