Mathematics: 1. Find the area and perimeter. NOTE: the top is a semi-circle (half-circle). 20 mm 14 mm 32 mm

1. Find the area and perimeter. NOTE: the top - id15752083, brooklynpage3930

lunaandrew332

22.01.2022

Semicircle = $\frac{\pi x d }{2} + d$

semicircle = $\frac{\pi x 20 }{2} + 20$

semicircle = 51.4

∴ the perimeter is 14 + 32 + 51.4

∴ The perimeter is 97.4 cm

Area 1 = $\pi r^{2}$

Area 1 = 20 ÷ 2 = 10

Area 1 = $\pi 10^{2}$

Area 1 = 314.2

Area 2 = 14 × 32 = 448

Area = Area 1 + Area 2

Area = 762.2cm²

Step-by-step explanation:

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dixonkaleo9

16.02.2020

87.5%

Step-by-step explanation:

$40 marked up is 100%. Since the new price is upped by $35 it will be close to 100%. $5 is 12.5%. 100% - 12.5% = 87.5%

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