# Are there any words using double w?

over 100 words have a double W, glowworm is an example

### Is fiberglass insulation OK to use on a propane garage heater single wall exhaust vent pipe where it passes through an attic?

Not only is it wrong to use on single wall pipe but is ABSOLUTELY WRONG,WRONG to use single wall pipe!!! replace immediately w/double wall pipe. You have an extremely dangerous fire hazard! almost any gas fueled device produces exhaust which can get extremely hot. A secondary benefit(besides not turning into a crispy critter) of using properly installed double walled pipe is no need to wrap w/insulation. Not only is it wrong to use on single…

### What is the c plus plus program to find the area and perimeter of a circle and rectangle?

#include<iostream> struct shape { virtual double perimeter() const = 0; virtual double area() const = 0; }; struct circle : shape { circle (double radius): r(radius), pi(4*atan(1)) {} double perimeter() const { return 2*pi*r; } double area() const { return pi*r*r; } private: double r; const double pi; }; struct rectangle : shape { rectangle (double width, double height): w(width), h(height) {} double perimeter() const { return 2*(w+h); } double area() const { return w*h…

### What is the perimeter of an area of 116 hectares?

Any length equal to or greater than 4308.132 metres. 116 hectares = 1 160 000 metres2 This area can be contained in any rectangle such that L*W = 1 160 000 m2 where L and W are its length and width. L and W cannot be smaller than sqrt(1160000) m = 1077.033 m when the perimeter would be 4*1077.033 m = 4308.132 m But you can increase the length to 1160m (W = 1000m) and…

### Is the product of two conjugate complex number always a real number?

Yes. This can be verified by using a "generic" complex number, and multiplying it by its conjugate: (a + bi)(a - bi) = a2 -abi + abi + b2i2 = a2 - b2 Alternative proof: I'm going to use the * notation for complex conjugate. Any complex number w is real if and only if w=w*. Let z be a complex number. Let w = zz*. We want to prove that w*=w. This is what…

### Why is W called double U and not double V?

In france they wright the W with 2 shearp point in the down adges and its looks like the combination ofdouble V, but in british hand wrighting there is no shearp adges to the word W. So it looks like the combination of double U, and the english language is world known language, so the pronounciaton of W takes from the british pronounciation. Hence the W pronounced like U. _ Thank you.