Question

HELPPPPP! WILL Give BRAINLIEST! 100 POINTS! Please get it correct!

Answer 1

Answer:

The area of shaded region is 11.26 cm²

step-by-step explanation

Area of semicircle = 1/2 π r ²

= 1/2 × 3.14 × ( 4 cm )²

= 25.12 cm²

Area of triangle = 1/2 × base × height

= 1/2 × BC × AC

$\small \sf = 1/2× \sqrt{8 {}^{2} - 4 {}^{2} }$

2 × √48

= 13.86 cm²

Area of shaded region = 25.12 - 13.86

= 11.26 cm²

Hence , shaded region is 11.26 cm ².

Answer 2

Answer:

• 11.26 cm²

Step-by-step explanation:

The shaded region is the difference of areas of semicircle AB and triangle ABC.

ABC is right triangle as AB is diameter, so C is right angle.

Area of semicircle:

• A = 1/2πr² = 1/2*3.14*4² = 25.12 cm²

Area of triangle:

• A = 1/2BC*AC = 1/2*4*$\sqrt{8^2-4^2}$ = 2$\sqrt{48}$ = 13.86 cm²

Shaded are is:

• 25.12 - 13.86 = 11.26 cm²