Math, asked by sahil632, 1 year ago

a circular photo frame has an outer radius 20 cm and inner radius 18 cm find the width of the frame around the photo also find the cost of painting it with a metallic colour @ rupees 0.7 per CM square. pi 22 upon 7

Answers

Answered by Anonymous
22
Width of the frame = outer radius- inner radius
                              = 20 - 18 = 2cm

area of frame = -)

= 22/7 x (400-324)

= 22/7 x 76

= 22 x 185/100

= 40.7

Cost = area x rate

= 40.7 x 0.7

= $28.49

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