Tt = 3.14
what is the area of this shaded portion?
(use 3.14 for 1.)
select the correct answer
48.4 m2
15 m
49.1 m 2
128.3 m2
177.9 m2

70

step-by-step explanation:

2*5=10

4*15=60

60+10=

70

d. 145*2 is 290 than the total angle is 360 then minus 290 then divide by two

vertical=18cm horizontal=18cm hypotenuse=25.5

step-by-step explanation:

1. 180°. the sum of the interior angles of a triangle is 180°, for the equilateral triangle that it has three equals side is 60°+60°+60°=180°.

2. 60°. each interior angle of a equilateral triangle is 60°

3. 120°. the measure of ∠m is 120°, the sum of the angles ∠m and ∠n is equal to 180°. so, in order to find the measure of ∠m, we have ∠m+∠n=180° > ∠m=180°-∠n > ∠m=180°-60°=120°.

4. 360°. the sum of the exterior angles of an equilateral triangle is ∠m+∠r+∠x=120°+120°+120°=360°. the exterior angles of any triangle always add 360°.