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1. ### right triangle ABC with C=90 degrees. Round answer according to significant digits. ​If A = 16.1 degrees and c= 7.55 cm , find b.  ?

First find angle B (90 - 16.1) = 73.9 Use Sin rule  b/Sin B = c/SinC  (sinC = 1) b = Sin 73.9 x 7.55    b = 7.25cm

1 Answers · Science & Mathematics · 24/09/2020

2. ### How fast is the radius of balloon increasing at the instant the radius is 50 cm ?

dV/dt = 300 r = 50 V = (4/3) * pi * r^3 dV/dt = 4 * pi * r^2 * dr/dt 300 = 4 * pi * 50^2 * dr/dt 300 = 10000 * pi * dr/dt 3 = 100 * pi * dr/dt 3 / (100 * pi) = dr/dt

1 Answers · Science & Mathematics · 06/07/2020

3. ### Triangles?

... Hence, AD / AB = DE / BC AD / (2 cm ) = (9 cm ) / (1.5 cm ) AD = 2 × (9/1.5) cm AD = 12 cm BD...

9 Answers · Science & Mathematics · 14/03/2020

4. ### Help with differentials please?

...? Calculate area and multiply fo thickness.  Although 5 cm is much too thick for paint. area of hemisphere is 2πr² = 2π...

3 Answers · Science & Mathematics · 09/02/2020

5. ### altitude increasing problem (calculus)?

da/dt = 2 cm /min dA/dt = 5 cm ^2/min db/dt = ? a = 8 A = 93 A = (1/2) * a...

1 Answers · Science & Mathematics · 01/06/2020

6. ### An isosceles triangle has a base with length 25 centimeter and a vertex angle of 50 degrees. What is the perimeter of the triangle?

If the base is 25 cm and its opposite angle is 50° with an unknown length for the other two ...'s your exact answer. This is approximately: 84.155 cm (rounded to 3DP)

6 Answers · Science & Mathematics · 10/07/2020

7. ### Find the area of the circle with radius A,8cm B,6cm C,12cm?

A. 64 pi cm ^2 = 201.06 cm ^2 B. 36 pi cm ^2 = 113.10 cm ^2 C. 144 pi cm ^2 = 452.49 cm ^2

4 Answers · Science & Mathematics · 17/06/2020

8. ### Geometry triangle problem?

... O be the center of the circle. ∠BOC = 90° OB = 2 cm OC = 2 cm Do you see where this is going? Consider...

1 Answers · Science & Mathematics · 08/10/2020

9. ### Trigonometry Question?

The cool thing about radians is it directly matches to the distance along a unit circle, so just multiply the *radius* times the angular velocity. v = rω v = 6.15 cm * 5.2 rad/sec v = 31.98 cm /sec Answer: ~32 cm /sec

3 Answers · Science & Mathematics · 26/10/2020

10. ### Geometry(solving area of trapezoid)?

...solve 2 equations ---> h = 22 area ABCD = (1/2)(110+80)(22) = 2090 cm ^2

3 Answers · Science & Mathematics · 13/04/2020