Question

HELP GIVE ME INSTRUCTIONS ON HOW TO DO THIS EXPLAIN IT AS IF YOUR TELLING IT TO A PERSON WHOS NEVER DONE THIS PLZZ I NEE IT SHORT I GOTTA WRITE IT ON PAPER

Answer 1

Answer:

521 mm²

Step-by-step explanation:

There are two shapes making this composite shape - a half circle and a trapezoid.  The formula for the area of a circle is pi times r-squared. ($\pi$r²)

Since the diameter of the circle is 20, the radius is 10.  So pi times 10 squared

3.14159265358x100=314.159265358

Half of that is 157.079632679 (Round to 157)

The formula for a trapezoid is (b1+b2)/2 time height.  The bottom base is 32.  The top base is 20.  32+20=52.  52÷2=26. 26x14=364

157+364= 521 mm²

Answer 2

Answer:

Step-by-step explanation:

$\text{Okay you have parallelogram and a half circle. The area of a circle is}\\ \\ A=\pi r^2 \\ \\ \text{The area of the parallelogram is the average of the bases times its height}\\ \\ A=h(b2+b1)/2\text{ so the total area is}\\ \\ A=\pr^2/2+h(b2+b1)/2\\ \\ r=10,\ h=14,\ b1=20,\ b2=32\\ \\ A=\pi 10^2/2+14(20+32)/2\\ \\ A\approx 521.1 mm^2$