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lesya [120]
3 years ago
5

Block B

Mathematics
1 answer:
Troyanec [42]3 years ago
8 0

Answer:

a and d

Step-by-step explanation:

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In circle A below, chord BC and diameter DAE intersect at F. If arc CD = 46° and arc BE = 78°, what is m_BFE? D B А​
wel

Given:

Consider the below figure attached with this question.

In circle A below, chord BC and diameter DAE intersect at F.

The arc CD = 46° and arc BE = 78°.

To find:

The measure of angle BFE.

Solution:

According to intersecting chords theorem, if two chords intersect inside the circle then the angle on the intersection is the average of intercepted arcs.

Using intersecting chords theorem, we get

m\angle BFE=\dfrac{1}{2}(m(arcCD)+m(arcBE))

m\angle BFE=\dfrac{1}{2}(46^\circ+78^\circ)

m\angle BFE=\dfrac{1}{2}(124^\circ)

m\angle BFE=62^\circ

Therefore, the measure of angle BFE is 62°.

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3 years ago
Find the area 2 m 4 m 10 m
mina [271]

Answer:

30.285 m²

Step-by-step explanation:

C = 2πr

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32 ÷ 2

16

2 · 4 = 8

6.285 + 8 + 16

30.285

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3 years ago
Find the number of sides of a regular polygon if the sum of its interior angle is 1440
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The formula is 180(n-2)= 1140 then you divide 1140 by 180 to get 8 so then it would like like n-2=8 add the 2 over and n (being the number of sides)= 10 so your answer will be 10
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Find the measure of one interior angle of a regular 15-gon.
Nataliya [291]

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156*

Step-by-step explanation:

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