Jack is a jeweller. He makes a pendant in the shape of a triangular prism as shown in the diagram. 1cm 4cm 3cm Jack makes the pendant from solid gold. He uses this formula. V = TL where V = volume of a triangular prism (cm3 ) T = area of the triangular face (cm2 ) L = length of the prism (cm) Jack knows that • mass = density × volume • the density of gold is 19 grams per cm3 • the cost of 1 gram of gold is £40 Jack sells the pendant for £382 more than the total cost of the gold needed to make the pendant. How much does Jack sell the pendant for? (
