Question

help

Answer 1

@triciaal

Answer 2

is it a?

Answer 3

i think its c

Answer 4

NO obviously cannot be you have the semi circle on top of the rectangle
perimeter is all the way around
see it automatically has to be more than 3 + 6 + 3

Answer 5

oh wow thats simple how u did it thanks

Answer 6

what is the perimeter for the semicircle?
remember the diameter is 2* radius
r = d/2

Answer 7

so its c

Answer 8

Okay, so perimeter of a rectangle is 2H+2L, so 2(3)+2(6), which is 18. But, since the diameter of the circle is inside the figure, its not part of the perimeter. so, actually, 12. The perimeter of a sphere is it's circumference (which is 2pi*r), since this is a half-circle, you need half of the circumference, so just (pi*r). The diameter is 6, so the radius is 3. 3pi is the circumference of the half-circle. So 12+3pi, simplified is 21.42477796, or C.

Answer 9

do you see 1/4 of a circle since you have a 90 degree angle ?