What is the ratio of the surface areas of two spheres with volumes of 64 cm & 125 cm? A. 4:5
B. 8:10
C. 16:25
D. 64: 125

The cash price of a television is $580.the hire-purchase price of the television is $865.the hire-purchase price is an initial deposit of n% of the cash price and 6 equal monthly payments of $120.find the value of n.

Evaluate 8j -k+148j−k+14 when j=0.25j=0.25 and k=1k=1.

Find the arc length of the semicircle. 7the grade