Question

Four identical mementos are prepared by a school to award students for their extra-ordinary performance both in academics and in extra- curricular activities. If each memento is prepared as shown in the figure and its base ABCD is gold plated from the front side at the rate of Rs 20/cm²

1. Area of ∆ AOB is
a) 50cm2

b) 49cm2

c) 9cm2

d)100cm2

2. Area of quadrant ODCO is

a) 18.5 cm2

b) 38.5cm2

c) 53.8cm2

d) 83.5cm2

3.Area of shaded region ABCD is
a)31.5cm2

b) 16.5cm2

c) 11.5cm2

d)10.5cm2

4.Total area of gold plating the 4 mementoes
a) 46 cm2

b) 50cm2

c) 49 cm2

d) 48cm2

5. Total cost of gold plating the 4 mementoes
a) Rs 910 b) Rs 920 c) Rs 950 d) Rs 930​

Answer 1

Answer:

d) 48cm2 thank u mark as brainly