Question

Use 3.14 for pi. Round to the nearest tenth

Answer 1

Answer:

$\boxed{\text{\sf \Large 138.6 mm^2 }}$

Step-by-step explanation:

Area of rectangle

$15 \times 5=75$

Area of circle (semi-circle+semi-circle)

$r=(15-3-3) \div 2 = 4.5$

$\pi \times 4.5^2=20.25\pi$

Add both areas

$20.25\pi +75$

$20.25 \times 3.14 +75=138.585$