From the circular card sheet of radius 28 cm two circles of radius 3.5cm And a triangle with base 3cm and height 2cm is removed.Find the area of remaining sheet. About the author Alaia
Step-by-step explanation: area of circular card sheet = πr² = 3.142×28²= 2463.328 cm² small circle radius = 3.5cm area of this circle = πx 3.5²= 38.4895 cm² there are 2 circles of radius 3.5cm therefore total area = 38.4895×2 = 76.979cm² area of traingle =( basexheight )/2 = (3×2) /2 = 3cm² therefore total area that is removed, 2 circles + 1 traingle = 76.979+3 = 79.979cm² remaining area after removing these circles and traingle, 2463.328- 79.979 = 2383.349cm² Reply
Step-by-step explanation:
area of circular card sheet
= πr² = 3.142×28²= 2463.328 cm²
small circle radius = 3.5cm
area of this circle = πx 3.5²= 38.4895 cm²
there are 2 circles of radius 3.5cm
therefore total area = 38.4895×2 = 76.979cm²
area of traingle =( basexheight )/2
= (3×2) /2 = 3cm²
therefore total area that is removed,
2 circles + 1 traingle = 76.979+3 = 79.979cm²
remaining area after removing these circles and traingle,
2463.328- 79.979 = 2383.349cm²