Work out the area of this circle

Take pie to be 3.142 and give your answer to one decimal place

radius is 4cm

Evaluate the expression c : d for c = 5 and d = 15.

Which is larger and by how much? (5² + 7²) or (3² + 8²)

What is the equation of the line that passes through (2, 7) and is perpendicular to y = - 5

X is less than 7 and greater than 0

Rory cut 12 inches of dough into pieces that were 1/3 inch long. how many pieces of dough didRory have after he was finished cutting?

The length of a rectangle is 3 inches more than its width. If the length and width are each increased by 2 inches, the perimeter of the rectangle becomes 66 inches. If x is the width of the rectangle, find its length and width.

A loan of $1000 is to be paid back, with interest, at the end of 1 year. Aft er 3 months, a partial payment of $300 is made. Use the US Rule to determine the balance due at the end of one year, considering the partial payment.

How many hours would someone who earns $6.75 per hour have to work to earn $104.63?

A 1200 kg car rolling on a horizontal surface has speed v = 50 km/h when it strikes a horizontal coiled spring and is brought to rest in a distance of 2.2 m. What is the spring stiffness constant of the spring?

5/12 x (-8/9) x (-12/5)