Question

Point D is between points R and S on RS(line on top). Find the length of-

RS(line on top) if RD = 7 and DS = 12.

A:1
B:5
C:18
D:19



Please select the best answer from the choices provided


A?
B?
C?
D?

Answer 1

The best answer from the choices provided is

Option D : 19

Explanation:

Given:

RS is a Straight Line,

Point D is between points R and S on RS(line on top)

Such that

RD = 7

DS = 12

To Find:

Length of RS = ?

Solution:

RS is a Straight Line ................Given

Point D is between points R and S on RS(line on top)

Such that

R - D - S

Therefore By Line Addition Property we will have

`l(RS)=l(RD)+l(DS).........................R-D-S`

Substituting the given values we get

`l(RS)=7+12\\\\l(RS)=19\ units`

The best answer from the choices provided is

Option D : 19