A right square pyramid has a base with sides that are 2 inches in length and a slant height of 7 inches. If the lengths of the sides of the base and the slant height are multiplied by 7, by what factor is the surface area multiplied? A. 7 B. 14 C. 28 D. 49

Step-by-step explanation:

base b = 2 in

slant height L = 7 in

lateral area = 4·½bL = 4·½·2·7 = 28 in²

base area = b² = 4 in²

surface area = 28+4 = 32 in²

If b = 14 and L = 49:

lateral area = 4·½·14·49 = 1372 in²

base area =  196 in²,

and surface area = 1372+196 = 1568 in²

The surface area has multiplied by 49.

solution:

as, mean is defined as sum of all the observations divided by total number of observations.

and , median is mid value of the data whether arranged in ascending order or descending order.

consider, roadsters:

2,3,4,5,6,7,8,9

mean =

also, median= , because number of observations is even, so median is mean of two mid values.

now, coming to bandits

2,3,4,5,6

mean =  

median = 4, as number of observations is odd.

so, roadsters has greater median as well mean than bandits.

→option a is true about the repairs performed on 2 types of cars:

bandits have lower median and mean than roadsters.