Q-28 plz fast plzzzzzzz
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tarunm088:
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Yeh i solve question 7but not 8
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i) area of triangle -area of sector
=1/2×10×10 - 1/4×22/7×7×7
=50 - 77/2
=(100-77)/2
=23/2 cm 2
This is the area of silver plated region
So , required cost
=23/2 × rate
=23/2 × 20
=Rs.230
=1/2×10×10 - 1/4×22/7×7×7
=50 - 77/2
=(100-77)/2
=23/2 cm 2
This is the area of silver plated region
So , required cost
=23/2 × rate
=23/2 × 20
=Rs.230
You need to multiply it by 4 as 4 identical mementos are made
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