To answer this question, you need to understand how to convert a unit. In this case, the conversion would be milli meter to feet. Since it area(the unit is ^2), the conversion needs to be done twice.
The calculation would be:
(6.490^10^3 mm2) / (304.8mm/ft) / (304.8mm/ft) = 0.06985= 6.985* 10^-2 ft2
Answer:
3r1ifguqeigdvcig3p1iyrg f837grygqdowgvy
Step-by-step explanation:
qwriug13uorgv[13rhh1worugv
Answer:
angle DEC is 45 degrees
Step-by-step explanation:
angle DEC is 45 degrees because it is supplementary to 135 degrees
(with 135 degrees, adds up to 180 degrees)
Answer:
C. 138°
Step-by-step explanation:
< ABC = 1/2 ( ac + de)
90 = 1/2 (ac +42)
multiply each side by 2
2*90 = 2*12/ (ac+42)
180 = ac+42
subtract 42 from each side
180-42 = ac
138 = ac
Answer:
(i) The name of the part of the circle, OQ is a radius
(ii) The radius of the sector QOR is 21 cm
Step-by-step explanation:
The given figure is a sector of the circle O
∵ Any sector of a circle formed from 2 radii and an arc
∴ OQ is a radius
(i) The name of the part of the circle, OQ is a radius
The rule of the length of an arc of a circle is L = × 2 π r, where
- α is the angle of the sector
- r is the radius of the circle
∵ The length of the arc QR is 22 cm
∴ L = 22
∵ The measure of the angle of the arc is 60°
∴ α = 60°
∵ π =
→ Substitute them in the rule above
∵ 22 = × 2 × × r
∴ 22 = r
→ Divide both sides by
∴ 21 = r
(ii) The radius of the sector QOR is 21 cm