... and CD are the parallel sides with lengths 10

**cm**and 20**cm**, respectively. See the attached sketch. Let point ...3 Answers · Science & Mathematics · 03/08/2020

The area of a sector of a circle with a radius of 15

**cm**is 75pi**cm**^2. ? Total circle Area = π(15)^2 = 225π**cm**^2...11 Answers · Science & Mathematics · 28/05/2020

A=l*w 56= 2l + 2w; w= 28 - l A= l*(28 - l)= 28l - l² dA/dl= 28 - 2l= 0 l= 14

**cm**, w= 14**cm**4 Answers · Science & Mathematics · 19/05/2020

... dV/dt = 4πr².dr/dt so, when the diameter is 20

**cm**we have: -4π = 4πr².dr/dt Hence, dr/dt = -1/r² i.e. dr...3 Answers · Science & Mathematics · 15/08/2020

apply the law of sine ..a................b ---------=-------------- .sin(A)........sin(B) ..45..............b --------- = ----------- .sin(70) ....sin(40) 45sin(40) = bsin(70) b = 30.78

**cm**or 31**cm**answer//2 Answers · Science & Mathematics · 06/10/2020

1 US gallon is 231 cubic inches 1 inch is 2.54

**cm**231 * 2.54^3 => 3,785.411784**cm**^33 Answers · Science & Mathematics · 03/09/2020

...and h r² + h² = s² 3² + h² = 5² h = 4

**cm**V = 1/3 π(3)²(4) V = 12π Answer C4 Answers · Science & Mathematics · 11/06/2020

1.1

**cm**= 0.4330708661417323 in6 Answers · Science & Mathematics · 01/07/2020

The volume of a sphere with radius "r" is given by: V = 4*π*r³/3 so: r = (3V/(4π))^(1/3) The surface area of a sphere with radius "r" is given by: A = 4π*r² You want to know the area given the volume...

4 Answers · Science & Mathematics · 31/10/2019

AC = 2. See below for explanation. Notice that there are two similar triangles, ABC and EBD. The area of EBD is twice that of ABC, since the trapezoid area is equal to that of triangle ABC. But, the square...

3 Answers · Science & Mathematics · 19/12/2019