Answer:
Step-by-step explanation:
1) radius = 70 m
Perimeter of a circle = 2 * radius * 3.14 = 70 * 2 * 3.14 = 439,6 m
Total perimeter = 439.6 + (100 * 2) = 439,6 + 200 = 639.6 m
2) perimeter of a semi circle = radius * 22/7 = 7 * 22/7 = 22 cm
Answer:
about 8.3 miles an hour.
Step-by-step explanation:
34/4 is 8.5
90/11 is 8.2
average: 8.3
To verify this, we can simply find the area of the triangle using the well-known formula
, where
and
are the base and height, respectively of the triangular region
. We have
, so the area is
, as expected.
Could you stop with the wird pictures, I'm at home with my fam and... ya
so
complementary angles add to 90 degerss
let's say
ABC=x
ABD=y for easier
x+y=90
also
x is 20 more than y
x=20+y
sub 20+y for x
20+y+y=90
20+2y=90
minus 20 both sides
2y=70
divide by 2 both sideds
y=35
sub back
x=20+y
x=20+35
x=55
∠ABC=55°
∠ABD=35°